This site presents a review of standards and guidelines set by international bodies covering Indoor Environmental Quality (IEQ) parameters. There are currently 29 reviewed organizations from which data from 26 Indoor Air Quality (IAQ) parameters, 7 thermal comfort parameters and 5 electromagnetic radiation parameters have been reviewed. This site was developed and is maintained by Diane Bastien and Marjan Mansourvar from the University of Southern Denmark. For comments and suggestions please contact: dib@iti.sdu.dk.


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ACGIH - American Conference of Governemental Industrial Hygienists
ASHRAE - American Society of Heating, Refrigerating and Air Conditioning Engineers
DFG - Deutsche Forschungsgemeinschaft
DK - Danish Standard
DOSH - Department of Occupational Safety and Health
EC - European Commission
EN 15251 - European Standards
EPA - United States Enviromental Protection Agency
EUROPAEM - European Academy for Environmental Medicine
EnvCAN - Environment Canada
FiSIAQ - Finnish Society of Indoor Air Quality and Climate
HKIAQO - Hong Kong Indoor Air Quality Objective
HKSAR - Indoor Air Quality Management Group
HSE - Health and Safety Executive
HealthCAN - Health Canada
IBN - Institute of Building Biology + Sustainability
ICNIRP - International Commission on Non-Ionizing Radiation Protection
IDPH - Illinois department of public health
IEE - Institute of Environmental Epidemiology
INSHT - Instituto Nacional de Seguridad y Salud en el Trabajo
KEPA - Kuwait Environment Public Authority
MOE - Ministry of the Environment
NIOSH - National Institute for Occupational Safety and Health
OSHA - Occupational Safety and Health Administration
SEPA - State Environment Protection Agency
SWA - Safe Work Australia
TCO - TCO Development
WELL - International WELL Building Institute
WHO IAQ - World Health Organization
WHO OAQ - World Health Organization


Acetaldehyde (3)
Acrolein (3)
Ammonia (4)
Arsenic (2)
Benzene (12)
Benzo[a]pyrene (2)
Cadmium (2)
Carbon dioxide (19)
Carbon monoxide (21)
Formaldehyde (19)
Hydrogen Sulfide (3)
Lead (11)
Nickel (2)
Nitrogen dioxide (20)
Nitrogen monoxide (0)
Ozone (19)
Particles <10 μm (9)
Particles <2.5 μm (9)
Radon (11)
Sulfur dioxide (15)
Toluene (6)
Total bacterial counts (4)
Total fungal counts (2)
Total suspended particles (5)
Total volatile organic compounds (7)
Xylene (5)


Air velocity (5)
Light (1)
Mean radiant temperature (0)
Operative temperature (2)
Relative humidity (7)
Room air temperature (5)
Sound (1)


AC electric fields (5)
AC magnetic fields (4)
DC electric fields (1)
DC magnetic fields (2)
Radiofrequencies (7)

Note: Selected organizations that do not have a guideline for the selected parameter are not displayed in the graphic below

Average exposure time (Ceiling = value not to be exceeded, Floor = values above this threshold are in the highest exposure category)












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Acetaldehyde (3)
Acrolein (3)
Ammonia (4)
Arsenic (2)
Benzene (12)
Benzo[a]pyrene (2)
Cadmium (2)
Carbon dioxide (19)
Carbon monoxide (21)
Formaldehyde (19)
Hydrogen Sulfide (3)
Lead (11)
Nickel (2)
Nitrogen dioxide (20)
Nitrogen monoxide (0)
Ozone (19)
Particles <10 μm (9)
Particles <2.5 μm (9)
Radon (11)
Sulfur dioxide (15)
Toluene (6)
Total bacterial counts (4)
Total fungal counts (2)
Total suspended particles (5)
Total volatile organic compounds (7)
Xylene (5)

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Air velocity (5)
Light (1)
Mean radiant temperature (0)
Operative temperature (2)
Relative humidity (7)
Room air temperature (5)
Sound (1)

Select All / Unselect All
AC electric fields (5)
AC magnetic fields (4)
DC electric fields (1)
DC magnetic fields (2)
Radiofrequencies (7)


IAQ parameters
Parameter Symbol Level Unit Average Time Note Organization
Carbon dioxide CO2 1100.0 ppm Ceiling 700 ppm above outdoor air levels ASHRAE
Carbon monoxide CO 9.0 ppm 8 hours ASHRAE
Lead Pb 1.5 μg/m3 3 months ASHRAE
Nitrogen dioxide NO2 52.0 ppb 1 year 100 μg/m3 ASHRAE
Nitrogen dioxide NO2 247.0 ppb 24 hours 470 μg/m3 ASHRAE
Ozone O3 50.0 ppb 8 hours ASHRAE
Particles <2.5 μm PM2.5 15.0 μg/m3 Not specified ASHRAE
Particles <10 μm PM10 50.0 μg/m3 1 year ASHRAE
Radon Rd 148.0 Bq/m3 ASHRAE
Sulfur dioxide SO2 30.0 ppb 1 year 80 μg/m3 ASHRAE
Formaldehyde HCHO 27.0 ppb 8 hours ASHRAE
Formaldehyde HCHO 81.0 ppb 30 minutes ASHRAE
Total volatile organic compounds TVOC cannot be given ASHRAE
Carbon dioxide CO2 1000.0 ppm Ceiling DOSH
Carbon monoxide CO 10.0 ppm 8 hours DOSH
Ozone O3 50.0 ppb 8 hours DOSH
Total suspended particles TSP 150.0 μg/m3 8 hours Respirable particulates DOSH
Formaldehyde HCHO 100.0 ppb 8 hours DOSH
Total volatile organic compounds TVOC 3000.0 ppb 8 hours DOSH
Total bacterial counts TBC 500.0 cfu/m³ DOSH
Total fungal counts TFC 1000.0 cfu/m³ DOSH
Room air temperature Ta 23.0 °C Floor DOSH
Room air temperature Ta 26.0 °C Ceiling DOSH
Relative humidity RH 40.0 % Floor DOSH
Relative humidity RH 70.0 % Ceiling DOSH
Air movement v 0.15 m/s Floor DOSH
Air movement v 0,5 m/s Ceiling DOSH
Carbon monoxide CO 8.6 ppm 8 hours limit value (10 mg/m3) EC
Carbon monoxide CO 25.9 ppm 1 hour 30 mg/m3 EC
Lead Pb 0.5 μg/m3 1 year EC
Nitrogen dioxide NO2 21.0 ppb 1 year 40 μg/m3 EC
Nitrogen dioxide NO2 105.0 ppb 1 hour 200 μg/m3 EC
Ozone O3 60.0 ppb 8 hours Target value (120 μg/m3) EC
Ozone O3 91.0 ppb 8 hours information threshold (180 μg/m3) EC
Ozone O3 121.0 ppb 8 hours alert threshold (240 μg/m3) EC
Particles <2.5 μm PM2.5 25.0 μg/m3 24 hours EC
Particles <10 μm PM10 50.0 μg/m3 24 hours EC
Sulfur dioxide SO2 47.0 ppb 24 hours limit value (125 μg/m3) EC
Sulfur dioxide SO2 132.0 ppb 1 hour Limit value (350 μg/m3) EC
Sulfur dioxide SO2 188.0 ppb 1 hour Alert threshold (500 μg/m3) EC
Benzene C6H6 5.0 μg/m3 1 year limit value EC
Carbon dioxide CO2 750.0 ppm Ceiling 350 ppm above outdoor concentration, category 1 (here assuming ambient concentration of 400 ppm) EN 15251
Carbon dioxide CO2 900.0 ppm Ceiling 500 ppm above outdoor concentration, category 2 (here assuming ambient concentration of 400 ppm) EN 15251
Carbon dioxide CO2 1200.0 ppm ceiling 800 ppm above outdoor concentration, category 3 (here assuming ambient concentration of 400 ppm) EN 15251
Carbon dioxide CO2 2000.0 ppm Floor > 800 ppm above outdoor concentration, category 4 (here assuming ambient concentration of 400 ppm) EN 15251
Operative temperature Top 21.0 °C Floor winter, residential building (living space) Category 1 EN 15251
Operative temperature Top 25.5 °C Ceiling summer, residential building (living space) Category 1 EN 15251
Operative temperature Top 20.0 °C Floor winter, residential building (living space) Category 2 EN 15251
Operative temperature Top 26.0 °C Ceiling summer, residential building (living space) Category 2 EN 15251
Operative temperature Top 18.0 °C Floor winter, residential building (living space) Category 3 EN 15251
Operative temperature Top 27.0 °C Ceiling summer, residential building (living space) Category 3 EN 15251
Relative humidity RH 30.0 % Floor Category 1 EN 15251
Relative humidity RH 50.0 % Ceiling Category 1 EN 15251
Relative humidity RH 25.0 % Floor Category 2 EN 15251
Relative humidity RH 60.0 % Ceiling Category 2 EN 15251
Relative humidity RH 20.0 % Floor Category 3 EN 15251
Relative humidity RH 70.0 % Ceiling Category 3 EN 15251
Light I 500.0 lx Floor office buildings, design illumination level EN 15251
Light I 300.0 lx Floor classrooms EN 15251
Light I 500.0 lx Floor classrooms for adult education EN 15251
Sound Lp 32.0 dB(A) Ceiling design value, living room EN 15251
Sound Lp 26.0 dB(A) Ceiling design value, bedroom EN 15251
Sound Lp 35.0 dB(A) Ceiling design value, small offices and conference room EN 15251
Sound Lp 40.0 dB(A) Ceiling design value, landscaped offices and office cubicles EN 15251
Carbon monoxide CO 9.0 ppm 8 hours May exceed once pr. year EPA
Lead Pb 0.15 μg/m3 3 months EPA
Nitrogen dioxide NO2 100.0 ppb 1 hour EPA
Ozone O3 70.0 ppb 8 hours EPA
Particles <2.5 μm PM2.5 35.0 μg/m3 24 hour EPA
Particles <10 μm PM10 150.0 μg/m3 24 hour EPA
Sulfur dioxide SO2 75.0 ppb 1 hour EPA
Radiofrequencies RF 10000.0 μW/m2 Ceiling For Radio broadcast (FM), Daytime EUROPAEM
Radiofrequencies RF 100.0 μW/m2 Ceiling For GSM (2G) 900/1800 MHz, DECT, UMTS (3G), LTE (4G), Daytime EUROPAEM
Radiofrequencies RF 10.0 μW/m2 Ceiling For GSM (2G) 900/1800 MHz, DECT, UMTS (3G), LTE (4G), Nighttime EUROPAEM
Radiofrequencies RF 0.1 μW/m2 Ceiling For GGPRS (2.5G) with PTCCH, DAB+, Wi-Fi 2.4/5.6 GHz, Sensitive populations EUROPAEM
AC magnetic fields AC MF 10.0 mG Ceiling Daytime, ELF (Extremely Low Frequency) (1000 nT) EUROPAEM
AC magnetic fields AC MF 10.0 mG Ceiling Nighttime, ELF (Extremely Low Frequency) (1000 nT) EUROPAEM
AC magnetic fields AC MF 3.0 mG Ceiling Sensitive populations, ELF (Extremely Low Frequency) (300 nT) EUROPAEM
AC magnetic fields AC MF 1.0 mG 24 hours Daytime, ELF (Extremely Low Frequency) (100 nT) EUROPAEM
AC magnetic fields AC MF 1.0 mG 24 hours Nighttime, ELF (Extremely Low Frequency) (100 nT) EUROPAEM
AC magnetic fields AC MF 0.3 mG 24 hours Sensitive populations, ELF (Extremely Low Frequency) (30 nT) EUROPAEM
AC electric fields AC EF 10.0 V/m Ceiling Daytime, ELF (Extremely Low Frequency) EUROPAEM
AC electric fields AC EF 1.0 V/m Ceiling Nighttime, ELF (Extremely Low Frequency) EUROPAEM
AC electric fields AC EF 0.3 V/m Ceiling Sensitive populations, ELF (Extremely Low Frequency) EUROPAEM
Carbon dioxide CO2 750.0 ppm 24 hours S1 - very good, assuming ambiant CO2 concentration of 400 ppm FiSIAQ
Carbon dioxide CO2 950.0 ppm 24 hours S2 - good, assuming ambiant CO2 concentration of 400 ppm FiSIAQ
Carbon dioxide CO2 1200.0 ppm 24 hours S3 - satisfactory, assuming ambiant CO2 concentration of 400 ppm FiSIAQ
Particles <2.5 μm PM2.5 10.0 μg/m³ 24 hours S1 - very good FiSIAQ
Particles <2.5 μm PM2.5 10.0 μg/m³ 24 hours S2 - good FiSIAQ
Particles <2.5 μm PM2.5 25.0 μg/m³ 24 hours S3 - satisfactory FiSIAQ
Radon Rd 100.0 Bq/m³ Not specified S1 - very good & S2 - good, duration determined by a measurement method approved by Radiation and Nuclear Safety Authority FiSIAQ
Radon Rd 200.0 Bq/m³ Not specified S3 - satisfactory, duration determined by a measurement method approved by Radiation and Nuclear Safety Authority FiSIAQ
Operative temperature Top 20.5 °C Floor S1 - very good, for daily mean outdoor temperature <0°C FiSIAQ
Operative temperature Top 22.5 °C Ceiling S1 - very good, for daily mean outdoor temperature <0°C FiSIAQ
Operative temperature Top 22.0 °C Floor S1 - very good, for daily mean outdoor temperature >20°C FiSIAQ
Operative temperature Top 25.0 °C Ceiling S1 - very good, for daily mean outdoor temperature >20°C FiSIAQ
Operative temperature Top 20.5 °C floor S2 - very good, for daily mean outdoor temperature <0°C FiSIAQ
Operative temperature Top 23.0 °C ceiling S2 - very good, for daily mean outdoor temperature <0°C FiSIAQ
Air movement v 0.15 m/s Ceiling Tair = 21-23 °C - S1, very good FiSIAQ
Air movement v 0.2 m/s Ceiling Tair = 25 °C - S1, very good FiSIAQ
Air movement v 0.25 m/s Ceiling Tair = 25 °C - S2 good FiSIAQ
Carbon dioxide CO2 1000.0 ppm 8 hours HKIAQO
Carbon monoxide CO 25.8 ppm 1 hour 30000 µg/m3 HKIAQO
Carbon monoxide CO 8.6 ppm 8 hours 10000 µg/m3 HKIAQO
Nitrogen dioxide NO2 105.0 ppb 1 hour 200 µg/m3 HKIAQO
Nitrogen dioxide NO2 26.0 ppb 8 hours 50 µg/m3 HKIAQO
Particles <10 μm PM10 180.0 µg/m3 8 hours HKIAQO
Formaldehyde HCHO 80.0 ppb 1 hour 100 µg/m3 HKIAQO
Formaldehyde HCHO 50.0 µg/m3 8 hours HKIAQO
Total bacterial counts TBC 1000.0 cfu/m³ 8 hours HKIAQO
Carbon dioxide CO2 1000.0 ppm 8 hours good class HKSAR
Carbon dioxide CO2 800.0 ppm 8 hours Excellent class HKSAR
Carbon monoxide CO 6.1 ppm 8 hours good class HKSAR
Carbon monoxide CO 1.7 ppm 8 hours Excellent class HKSAR
Lead Pb 0.5 μg/m3 1 year From the Hong Kong Air Quality objectives, 3 exceedances allowed HKSAR
Nitrogen dioxide NO2 80.0 ppb 8 hours good class HKSAR
Nitrogen dioxide NO2 21.0 ppb 8 hours Excellent class HKSAR
Nitrogen dioxide NO2 106.0 ppb 1 hour good class HKSAR
Nitrogen dioxide NO2 53.0 ppb 1 hour Excellent class HKSAR
Ozone O3 61.0 ppb 8 hours good class HKSAR
Ozone O3 25.0 ppb 8 hours Excellent class HKSAR
Particles <2.5 μm PM2.5 75.0 μg/m3 24 hours From the Hong Kong Air Quality objectives, 9 exceedances allowed HKSAR
Particles <10 μm PM10 100.0 μg/m3 8 hours good class HKSAR
Particles <10 μm PM10 20.0 μg/m3 8 hours Excellent class HKSAR
Radon Rd 167.0 Bq/m3 8 hours good class HKSAR
Radon Rd 150.0 Bq/m3 8 hours Excellent class HKSAR
Sulfur dioxide SO2 188.0 ppb 10 minutes From the Hong Kong Air Quality objectives (500 µg/m3 ) HKSAR
Formaldehyde HCHO 81.0 ppb 8 hours good class HKSAR
Formaldehyde HCHO 24.0 ppb 8 hours Excellent class HKSAR
Formaldehyde HCHO 81.0 ppb 30 minutes good class HKSAR
Formaldehyde HCHO 57.0 ppb 30 minutes Excellent class HKSAR
Benzene C6H6 17 μg/m3 8 hours HKSAR
Total volatile organic compounds TVOC 261.0 ppb 8 hours good class HKSAR
Total volatile organic compounds TVOC 87.0 ppb 8 hours Excellent class HKSAR
Benzo[a]pyrene BaP 0.00014 ppt 8 hours HKSAR
Total bacterial counts TBC 1000.0 cfu/m3 8 hours good class HKSAR
Total bacterial counts TBC 500.0 cfu/m3 8 hours Excellent class HKSAR
Carbon dioxide CO2 5000.0 ppm 8 hours HSE
Carbon dioxide CO2 15000.0 ppm 15 minutes HSE
Carbon monoxide CO 20.0 ppm 8 hours HSE
Carbon monoxide CO 100.0 ppm 15 minutes HSE
Nitrogen dioxide NO2 500.0 ppb 8 hours HSE
Nitrogen dioxide NO2 1000.0 ppb 15 minutes HSE
Ozone O3 200.0 ppb 15 minutes HSE
Sulfur dioxide SO2 500.0 ppb 8 hours HSE
Sulfur dioxide SO2 1000 ppm 15 minutes HSE
Formaldehyde HCHO 2000.0 ppb 8 hours HSE
Formaldehyde HCHO 2000.0 ppb 15 minutes HSE
Benzene C6H6 3250 μg/m3 8 hours HSE
Carbon dioxide CO2 600.0 ppm Ceiling No Anomaly IBN
Carbon dioxide CO2 1000.0 ppm Ceiling Slight Anomaly IBN
Carbon dioxide CO2 1500.0 ppm Ceiling Severe Anomaly IBN
Carbon dioxide CO2 1500.0 ppm Floor Extreme Anomaly >1500ppm IBN
Radon Rd 30.0 Bq/m3 Ceiling No Anomaly IBN
Radon Rd 60.0 Bq/m3 Ceiling Slight Anomaly IBN
Radon Rd 200.0 Bq/m3 Ceiling Severe Anomaly IBN
Radon Rd 200.0 Bq/m3 Floor Extreme Anomaly IBN
Formaldehyde HCHO 16.0 ppb Ceiling No Anomaly (20 μg/m3) IBN
Formaldehyde HCHO 40.0 ppb Ceiling Slight Anomaly (50 μg/m3) IBN
Formaldehyde HCHO 80.0 ppb Ceiling Severe Anomaly (100 μg/m3) IBN
Formaldehyde HCHO 80.0 ppb Floor Extreme Anomaly (>100 μg/m3) IBN
Total volatile organic compounds TVOC 50.0 ppb Ceiling No Anomaly (100 μg/m3) IBN
Total volatile organic compounds TVOC 150.0 ppb Ceiling Slight Anomaly (300 μg/m3) IBN
Total volatile organic compounds TVOC 500.0 ppb Ceiling Severe Anomaly (1000 μg/m3) IBN
Total volatile organic compounds TVOC 500.0 ppb Floor Extreme Anomaly (>1000 μg/m3) IBN
Relative humidity RH 40.0 % Floor No Anomaly (between 40 and 60%) IBN
Relative humidity RH 30.0 % Floor Slight Anomaly (between 30-40% or between 60-70%) IBN
Relative humidity RH 20.0 % Floor Severe Anomaly (between 20-30% or between 70-80%) IBN
Relative humidity RH 20.0 % Ceiling Extreme Anomaly (<20% or > 80%) IBN
Relative humidity RH 60 % Ceiling No Anomaly (between 40 and 60%) IBN
Relative humidity RH 70 % Ceiling Slight Anomaly (between 30-40% or between 60-70%) IBN
Relative humidity RH 80 % Ceiling Severe Anomaly (between 20-30% or between 70-80%) IBN
Relative humidity RH 80 % Floor Extreme Anomaly (<20% or > 80%) IBN
Radiofrequencies RF 0.1 μW/m2 Ceiling No Anomaly IBN
Radiofrequencies RF 10.0 μW/m2 Ceiling Slight Anomaly IBN
Radiofrequencies RF 1000.0 μW/m2 Ceiling Severe Anomaly IBN
Radiofrequencies RF 1000.0 μW/m2 Floor Extreme Anomaly IBN
DC magnetic fields DC MF 1.0 μT Ceiling No Anomaly (values for the deviation of the flux density) IBN
DC magnetic fields DC MF 2.0 μT Ceiling Slight Anomaly (values for the deviation of the flux density) IBN
DC magnetic fields DC MF 10.0 μT Ceiling Severe Anomaly (values for the deviation of the flux density) IBN
DC magnetic fields DC MF 10.0 μT Floor Extreme Anomaly (values for the deviation of the flux density) IBN
AC magnetic fields AC MF 0.2 mG Ceiling No Anomaly (20nT), Values apply to frequencies up to and around 50 (60) Hz, higher frequencies should be assessed more critically IBN
AC magnetic fields AC MF 1.0 mG Ceiling Slight Anomaly (100 nT), Values apply to frequencies up to and around 50 (60) Hz, higher frequencies should be assessed more critically IBN
AC magnetic fields AC MF 5.0 mG Ceiling Severe Anomaly (500 nT), Values apply to frequencies up to and around 50 (60) Hz, higher frequencies should be assessed more critically IBN
AC magnetic fields AC MF 5.0 mG Floor Extreme Anomaly (>500 nT), Values apply to frequencies up to and around 50 (60) Hz, higher frequencies should be assessed more critically IBN
DC electric fields DC EF 100.0 V Ceiling No Anomaly IBN
DC electric fields DC EF 500.0 V Ceiling Slight Anomaly IBN
DC electric fields DC EF 2000.0 V Ceiling Severe Anomaly IBN
DC electric fields DC EF 2000.0 V Floor Extreme Anomaly IBN
AC electric fields AC EF 0.3 V/m Ceiling No Anomaly/ potential free, Values apply to frequencies up to and around 50 (60) Hz, higher frequencies should be assessed more critically IBN
AC electric fields AC EF 1.5 V/m Ceiling Slight Anomaly, potential free, Values apply to frequencies up to and around 50 (60) Hz, higher frequencies should be assessed more critically IBN
AC electric fields AC EF 10.0 V/m Ceiling Severe Anomaly, potential free, Values apply to frequencies up to and around 50 (60) Hz, higher frequencies should be assessed more critically IBN
AC electric fields AC EF 10.0 V/m Floor Extreme Anomaly, potential free, Values apply to frequencies up to and around 50 (60) Hz, higher frequencies should be assessed more critically IBN
Carbon dioxide CO2 1000.0 ppm Ceiling If the only CO2 source is exhaled breath IDPH
Carbon dioxide CO2 5000.0 ppm ceiling If there are other CO2 sources than exhaled breath IDPH
Carbon monoxide CO 9.0 ppm Ceiling IDPH
Nitrogen dioxide NO2 50.0 ppb 24 hours IDPH
Ozone O3 80.0 ppb Ceiling IDPH
Particles <2.5 μm PM2.5 65.0 μg/m3 24 hours IDPH
Particles <10 μm PM10 150.0 μg/m3 24 hours IDPH
Radon Rd 148.0 Bq/m3 not specified 4 pCi/L IDPH
Formaldehyde HCHO 100.0 ppb Ceiling For offices IDPH
Formaldehyde HCHO 30.0 ppb Ceiling For homes IDPH
Room air temperature Ta 20.0 °C Floor in winter (68 F) IDPH
Room air temperature Ta 24.0 °C Ceiling in winter (75F) IDPH
Room air temperature Ta 23.0 °C Floor in summer (73 F) IDPH
Room air temperature Ta 26.0 °C Ceiling In summer (79 F) IDPH
Relative humidity RH 20.0 % Floor IDPH
Relative humidity RH 60.0 % Ceiling IDPH
Carbon dioxide CO2 1000.0 ppm 8 hours IEE
Carbon monoxide CO 9.0 ppm 8 hours IEE
Ozone O3 50.0 ppb 8 hours IEE
Total suspended particles TSP 150.0 μg/m3 Ceiling Respirable particles with aerodynamic diameters less than 10 μm IEE
Formaldehyde HCHO 100.0 ppb 8 hours IEE
Total volatile organic compounds TVOC 3000.0 ppb Ceiling Total photoionisable compounds, reference to toluene IEE
Total bacterial counts TBC 500.0 CFU/m3 Ceiling IEE
Total fungal counts TFC 500.0 CFU/m3 Ceiling IEE
Room air temperature Ta 22.5 oC Floor At workstation within occupied zone IEE
Room air temperature Ta 25.5 oC Ceiling IEE
Relative humidity RH 70.0 % Ceiling At workstation within occupied zone IEE
Air movement v 0.25 m/s Ceiling At workstation within occupied zone IEE
Carbon dioxide CO2 1000.0 ppm Ceiling KEPA
Carbon monoxide CO 8.6 ppm 8 hours 10 mg/m3 KEPA
Carbon monoxide CO 100.0 mg/m3 15 minutes 100 mg/m3 KEPA
Carbon monoxide CO 52.0 ppm 30 minutes 60 mg/m3 KEPA
Carbon monoxide CO 60.0 ppm 1 hour KEPA
Lead Pb 0.5 μg/m3 1 year KEPA
Nitrogen dioxide NO2 52.0 ppb 24 hours 0.1 mg/m3 KEPA
Nitrogen dioxide NO2 346.0 ppb 30 minutes 0.66 mg/m3 KEPA
Nitrogen dioxide NO2 105.0 ppb 1 hour 0.2 mg/m3 KEPA
Ozone O3 101.0 ppb 8 hours 0.2 mg/m3 KEPA
Ozone O3 118.0 ppb 1 hour 0.235 mg/m3 KEPA
Ozone O3 56.0 ppb 24 hours 0.12 mg/m3 KEPA
Ozone O3 30.0 ppb 1 year KEPA
Total suspended particles TSP 230.0 μg/m3 24 hours KEPA
Total suspended particles TSP 75.0 μg/m3 1 year KEPA
Radon Rd 148.0 Bq/m3 1 year 4 picocuries/L KEPA
Formaldehyde HCHO 80.0 ppb 30 minutes 0.1 mg/m3 KEPA
Formaldehyde HCHO 96.0 ppb Ceiling 0.12 mg/m3 KEPA
Benzene C6H6 325 μg/m3 8 hours 0.1 ppm KEPA
Benzene C6H6 3250 μg/m3 15 minutes 1 ppm KEPA
Total volatile organic compounds TVOC 3000.0 ppb Not specified KEPA
Carbon monoxide CO 10.0 ppm 24 hours MOE
Carbon monoxide CO 20.0 ppm 8 hours MOE
Nitrogen dioxide NO2 60.0 ppb 24 hours MOE
Particles <2.5 μm PM2.5 15.0 μg/m3 1 year MOE
Particles <2.5 μm PM2.5 35.0 μg/m3 24 hours MOE
Total suspended particles TSP 100.0 μg/m3 24 hours MOE
Total suspended particles TSP 200 μg/m3 1 hour MOE
Sulfur dioxide SO2 40.0 ppb 24 hours MOE
Sulfur dioxide SO2 100.0 ppb 1 hour MOE
Benzene C6H6 3.0 μg/m3 1 year MOE
Carbon dioxide CO2 5000.0 ppm 8 hours OSHA
Carbon monoxide CO 50.0 ppm 8 hours OSHA
Lead Pb 50.0 μg/m3 8 hours OSHA
Nitrogen dioxide NO2 5000.0 ppb Ceiling OSHA
Ozone O3 100.0 ppb 8 hours OSHA
Sulfur dioxide SO2 5000.0 ppb 8 hours OSHA
Formaldehyde HCHO 750.0 ppb 8 hours OSHA
Formaldehyde HCHO 2000.0 ppb 15 minutes OSHA
Benzene C6H6 32362.0 μg/m3 8 hours 10 ppm OSHA
Benzene C6H6 161810.0 μg/m3 10 minutes 50 ppm OSHA
Radiofrequencies RF 10000000.0 μW/m2 10 minutes For frequencies from 10 MHz to 100 GHz (10 mW/cm2) OSHA
Carbon dioxide CO2 1000.0 ppm 24 hours SEPA
Carbon monoxide CO 8.6 ppm 1 hour 10 mg/m3 SEPA
Nitrogen dioxide NO2 126.0 ppb 1 hour 0.24 mg/m3 SEPA
Ozone O3 80.0 ppb 1 hour 0.16 mg/m3 SEPA
Particles <10 μm PM10 150.0 μg/m3 24 hours 0.15 mg/m3 SEPA
Radon Rd 400.0 Bq/m3 1 year SEPA
Sulfur dioxide SO2 188.0 ppb 1 hour 0.5 mg/m3 SEPA
Formaldehyde HCHO 80.0 ppb 1 hour 0.1 mg/m3 SEPA
Benzene C6H6 110.0 μg/m3 1 hour SEPA
Total volatile organic compounds TVOC 300.0 ppb 8 hours 0.6 mg/m3 SEPA
Ammonia NH3 283.0 ppb 1 hour 0.2 mg/m3 SEPA
Toluene C7H8 52.0 ppb 1 hour 0.2 mg/m3 SEPA
Xylene C8H10 45.0 ppb 1 hour 0.2 mg/m3 SEPA
Room air temperature Ta 22.0 °C Floor summer SEPA
Room air temperature Ta 28.0 °C Ceiling summer SEPA
Room air temperature Ta 16.0 °C Floor winter SEPA
Room air temperature Ta 24.0 °C ceiling winter SEPA
Relative humidity RH 40.0 % Floor summer SEPA
Relative humidity RH 80.0 % Ceiling summer SEPA
Relative humidity RH 30.0 % Floor winter SEPA
Relative humidity RH 60.0 % ceiling winter SEPA
Air movement v 0.3 m/s Ceiling summer SEPA
Air movement v 0.2 m/s Ceiling winter SEPA
Carbon dioxide CO2 5000.0 ppm 8 hours SWA
Carbon dioxide CO2 30000.0 ppm 15 minutes SWA
Carbon monoxide CO 30.0 ppm 8 hours SWA
Lead Pb 50.0 μg/m3 8 hours SWA
Nitrogen dioxide NO2 3000.0 ppb 8 hours SWA
Nitrogen dioxide NO2 5000.0 ppb 15 minutes SWA
Ozone O3 1000.0 ppb Ceiling SWA
Sulfur dioxide SO2 2000.0 ppb 8 hours SWA
Sulfur dioxide SO2 5000.0 ppb 15 minutes SWA
Formaldehyde HCHO 1000.0 ppb 8 hours SWA
Formaldehyde HCHO 2000.0 ppb 15 minutes SWA
Benzene C6H6 3200 μg/m3 8 hours SWA
Lead Pb 0.0 μg/m3 Ceiling The product must not contain this substance. TCO
Lead Pb 0.004 μg/m3 Ceiling Only for batteries (given in % of weight, not μg/m3) TCO
Cadmium Cd 0.0 μg/m3 Ceiling The product must not contain this substance. TCO
Cadmium Cd 0.002 μg/m3 Ceiling Only for batteries (given in % of weight, not μg/m3) TCO
Radiofrequencies RF 13333333.0 μW/m2 Not specified For headets (absorbed emission energy in unit volumes of brain tissue) for any cube of 10 g phantom tissue (0.04 W/kg) TCO
AC magnetic fields AC MF 2.0 mG Not specified Band I: 5 Hz to 2 kHz (200 nT) TCO
AC magnetic fields AC MF 0.25 mG Not specified Band II: 2 kHz to 400 kHz (25 nT) TCO
AC electric fields AC EF 10.0 V/m Not specified Band I: 5 Hz to 2 kHz TCO
AC electric fields AC EF 1.0 V/m Not specified Band II: 2 kHz to 400 kHz TCO
Carbon monoxide CO 9.0 ppm Ceiling monitored in regularly occupied spaces minimum once per year WELL
Nitrogen dioxide NO2 21.0 ppb Ceiling monitored in regularly occupied spaces minimum once per year WELL
Ozone O3 51.0 ppb Ceiling monitored in regularly occupied spaces minimum once per year WELL
Particles <2.5 μm PM2.5 15.0 μg/m3 Ceiling monitored in regularly occupied spaces minimum once per year WELL
Particles <2.5 μm PM2.5 25.0 μg/m3 ceiling Only for locations if the annual average ambient PM2.5 level is 35 μg/m3 or higher. In this case the maximum WELL certification achievable is gold. WELL
Particles <10 μm PM10 50.0 μg/m3 Ceiling monitored in regularly occupied spaces minimum once per year WELL
Particles <10 μm PM10 50.0 μg/m3 ceiling Only for locations if the annual average ambient PM2.5 level is 35 μg/m3 or higher. In this case the maximum WELL certification achievable is gold. WELL
Radon Rd 150.0 Bq/m3 Ceiling One test is conducted per 2,300 m2 [25,000 ft2] of regularly occupied space at or below grade. WELL
Formaldehyde HCHO 27.0 ppb Ceiling monitored in regularly occupied spaces minimum once per year WELL
Benzene C6H6 30.0 μg/m3 Ceiling monitored in regularly occupied spaces minimum once per year WELL
Nitrogen dioxide NO2 21.0 ppb 1 year 40 μg/m3 WHO
Nitrogen dioxide NO2 105.0 ppb 1 hour 200 μg/m3 WHO OAQ
Ozone O3 50.0 ppb 8 hours 100 μg/m3 WHO OAQ
Particles <2.5 μm PM2.5 25.0 μg/m3 24 hours WHO OAQ
Particles <2.5 μm PM2.5 10.0 μg/m3 1 year WHO OAQ
Particles <10 μm PM10 50.0 μg/m3 24 hours WHO OAQ
Particles <10 μm PM10 20.0 μg/m3 1 year WHO OAQ
Sulfur dioxide SO2 20.0 ug/m3 24 hours 20 μg/m3 WHO OAQ
Sulfur dioxide SO2 500.0 ug/m3 10 minutes 500 μg/m3 WHO OAQ
Radiofrequencies RF 50000000.0 μW/m2 Ceiling Occupational, 10-300 GHz (50 W/m2), averaged over a 20 cm2 area ICNIRP
Radiofrequencies RF 10000000.0 μW/m2 Ceiling General public, 10-300 GHz ICNIRP
Radiofrequencies RF 133333333.0 μW/m2 30 minutes Occupational, 100 kHz - 10 GHz (0.4 W/kg whole body SAR) ICNIRP
Radiofrequencies RF 26666666.0 μW/m2 30 minutes General public, 100 kHz - 10 GHz (0.08 W/kg whole body SAR) ICNIRP
Radiofrequencies RF 26666666 μW/m2 Ceiling Uncontrolled environment, whole body mass average, 100 kHz-10 GHz (0.08 W/kg) ICNIRP
DC magnetic fields DC MF 2000000.0 μT Ceiling Limit for head and trunk exposure, occupational ICNIRP
DC magnetic fields DC MF 8000000.0 μT Ceiling Only if in controlled environment, occupational ICNIRP
DC magnetic fields DC MF 400000.0 μT Ceiling Exposure of any body part, general public ICNIRP
AC magnetic fields AC MF 2000000.0 mG Not specified Occupational, up to 1 Hz, unperturbed rms value (2x10^5 μT) ICNIRP
AC magnetic fields AC MF 98765 mG Not specified Occupational, 1-8 Hz, unperturbed rms value (depend on frequency, 2x10^5μT/f^2) ICNIRP
AC magnetic fields AC MF 15152 mG Not specified Occupational, 8-25 Hz, unperturbed rms value (depend on frequency, 2.5x10^4 μT/f) ICNIRP
AC magnetic fields AC MF 592 mG Not specified Occupational, 0.025-0.82 kHz, unperturbed rms value (depend on frequency, 25 μT/f) ICNIRP
AC magnetic fields AC MF 307.0 mG Not specified Occupational, 0.82-65 kHz, unperturbed rms value (30.7 μT) ICNIRP
AC magnetic fields AC MF 4 mG Not specified Occupational, 0.065-10 MHz, unperturbed rms value (depend on frequency, 2.0 μT/f) ICNIRP
AC magnetic fields AC MF 2 mG Not specified Occupational, 10-400 MHz, unperturbed rms value (0.2 μT) ICNIRP
AC magnetic fields AC MF 3 mG Not specified Occupational, 400-2000 MHz, unperturbed rms value (depend on frequency, 0.01 μT f^0.5) ICNIRP
AC magnetic fields AC MF 4.5 mG Not specified Occupational, 2-300 GHz, unperturbed rms value (0.45 μT) ICNIRP
AC electric fields AC EF 20000.0 V/m Not specified Occupational, 1-25 Hz, unperturbed rms value ICNIRP
AC electric fields AC EF 1183 V/m Not specified Occupational (level depends on frequency, 500/f), 0.025-0.82 kHz, unperturbed rms value ICNIRP
AC electric fields AC EF 610.0 V/m Not specified Occupational, 0.82 kHz -1 MHz, unperturbed rms value ICNIRP
AC electric fields AC EF 111 V/m Not specified Occupational (level depends on frequency, 610/f), 0.025-0.82 kHz, unperturbed rms value ICNIRP
AC electric fields AC EF 61.0 V/m Not specified Occupational, 10 - 400 MHz, unperturbed rms value ICNIRP
AC electric fields AC EF 104 V/m Not specified Occupational, 400-2000 MHz, unperturbed rms value ICNIRP
AC electric fields AC EF 137 V/m Not specified Occupational, 2-300 GHz, unperturbed rms value ICNIRP
AC electric fields AC EF 10000 V/m Not specified General public, 1-25 Hz, unperturbed rms value ICNIRP
AC electric fields AC EF 165 V/m Not specified General public (level depend on frequency, 250/f), 0.025-3 kHz, unperturbed rms value ICNIRP
AC electric fields AC EF 87 V/m Not specified General public, 3kHz-1 MHz, unperturbed rms value ICNIRP
AC electric fields AC EF 37 V/m Not specified General public (level depend on frequency, 87/f^0.5), 1-10 MHz, unperturbed rms value ICNIRP
AC electric fields AC EF 28 V/m Not specified General public, 10-400 MHz, unperturbed rms value ICNIRP
AC electric fields AC EF 48 V/m Not specified General public (level depend on frequency, 1.375f^0.5), 400-2000 MHz, unperturbed rms value ICNIRP
AC electric fields AC EF 61 V/m Not specified General public, 2-300 GHz, unperturbed rms value ICNIRP
Carbon dioxide CO2 10000.0 ppm 8 hours INSHT
Carbon dioxide CO2 30000.0 ppm 15 minutes INSHT
Carbon monoxide CO 35.0 ppm 8 hours INSHT
Carbon monoxide CO 200.0 ppm 15 minutes INSHT
Lead Pb 50.0 μg/m3 8 hours INSHT
Nitrogen dioxide NO2 1000.0 ppb 15 minutes INSHT
Ozone O3 100.0 ppb 8 hours INSHT
Ozone O3 300 ppm 15 minutes INSHT
Radon Rd 70.0 Bq/m3 INSHT
Sulfur dioxide SO2 20000.0 ppb 8 hours INSHT
Sulfur dioxide SO2 5.0 ppm 15 minutes INSHT
Formaldehyde HCHO 100.0 ppb Ceiling INSHT
Benzene C6H6 3250 μg/m3 Ceiling INSHT
Total volatile organic compounds TVOC 25000.0 ppb Ceiling 50 mg/m3 INSHT
Toluene C7H8 20000.0 ppb Ceiling INSHT
Room air temperature Ta 17.0 °C Floor sedentary jobs INSHT
Room air temperature Ta 22.0 °C Ceiling sedentary jobs INSHT
Room air temperature Ta 15.0 °C Floor ordinary jobs INSHT
Room air temperature Ta 18.0 °C Ceiling ordinary jobs INSHT
Room air temperature Ta 12.0 °C Floor work that requires physical effort INSHT
Room air temperature Ta 15.0 °C Ceiling work that requires physical effort INSHT
Relative humidity RH 40.0 % Floor INSHT
Relative humidity RH 60.0 % Ceiling INSHT
Air movement v 0.25 m/s normal temperature INSHT
Air movement v 0.75 m/s hot environments INSHT
Carbon dioxide CO2 5000.0 ppm 8 hours TLV-TWA (Threshold Limit Value-Time-Weighted Average) ACGIH
Carbon dioxide CO2 30000.0 ppm 15 minutes TLV-STEL (Threshold Limit Value-Short-Term Exposure Limit) ACGIH
Carbon monoxide CO 25.0 ppm 8 hours TLV-TWA (Threshold Limit Value-Time-Weighted Average) ACGIH
Lead Pb 50.0 μg/m3 8 hours TLV-TWA (Threshold Limit Value-Time-Weighted Average) ACGIH
Nitrogen dioxide NO2 200.0 ppb 8 hours TLV-TWA (Threshold Limit Value-Time-Weighted Average) ACGIH
Ozone O3 50.0 ppb 8 hours TLV-TWA (Threshold Limit Value-Time-Weighted Average) - Heavy work ACGIH
Ozone O3 100.0 ppb 8 hours TLV-TWA (Threshold Limit Value-Time-Weighted Average) - Light work ACGIH
Sulfur dioxide SO2 250.0 ppb 15 minutes TLV-STEL (Threshold Limit Value-Short-Term Exposure Limit) ACGIH
Formaldehyde HCHO 100.0 ppb 8 hours TLV-TWA (Threshold Limit Value-Time-Weighted Average) ACGIH
Formaldehyde HCHO ppb 300.0 15 minutes TLV-STEL (Threshold Limit Value-Short-Term Exposure Limit) ACGIH
Benzene C6H6 1618.0 μg/m3 8 hours TLV-TWA (Threshold Limit Value-Time-Weighted Average) 0.5 ppm ACGIH
Arsenic As 10.0 μg/m3 8 hours TLV-TWA (Threshold Limit Value-Time-Weighted Average) ACGIH
Cadmium Cd 10.0 μg/m3 8 hours TLV-TWA (Threshold Limit Value-Time-Weighted Average) ACGIH
Nickel Ni 100.0 μg/m3 8 hours TLV-TWA (Threshold Limit Value-Time-Weighted Average) Soluble inorganic compounds and nickel subsulfide ACGIH
Nickel Ni 200.0 μg/m3 8 hours TLV-TWA (Threshold Limit Value-Time-Weighted Average) Insoluble inorganic compounds ACGIH
Nickel Ni 1500.0 μg/m3 8 hours TLV-TWA (Threshold Limit Value-Time-Weighted Average) Elemental nickel ACGIH
Hydrogen Sulfide H2S 1.0 ppm 8 hours TLV-TWA (Threshold Limit Value-Time-Weighted Average) ACGIH
Hydrogen Sulfide H2S 5.0 ppm 15 minutes TLV-STEL (Threshold Limit Value-Short-Term Exposure Limit) ACGIH
Ammonia NH3 25000.0 ppb 8 hours TLV-TWA (Threshold Limit Value-Time-Weighted Average) ACGIH
Ammonia NH3 35000.0 ppb 15 minutes TLV-STEL (Threshold Limit Value-Short-Term Exposure Limit) ACGIH
Toluene C7H8 20000.0 ppb 8 hours TLV-TWA (Threshold Limit Value-Time-Weighted Average) ACGIH
Xylene C8H10 100000.0 ppb 8 hours TLV-TWA (Threshold Limit Value-Time-Weighted Average) ACGIH
Xylene C8H10 150000.0 ppb 15 minutes TLV-STEL (Threshold Limit Value-Short-Term Exposure Limit) ACGIH
Acetaldehyde CH3CHO 25.0 ppm 8 hours TLV-TWA (Threshold Limit Value-Time-Weighted Average) ACGIH
Acrolein C3H40 100.0 ppb 8 hours TLV-TWA (Threshold Limit Value-Time-Weighted Average) ACGIH
Carbon dioxide CO2 5000.0 ppm 8 hours TWA (Time-Weighted Average) DFG
Carbon monoxide CO 30.0 ppm 8 hours TWA (Time-Weighted Average) DFG
Nitrogen dioxide NO2 500.0 ppb 8 hours TWA (Time-Weighted Average) DFG
Sulfur dioxide SO2 1000.0 ppb 8 hours TWA (Time-Weighted Average) DFG
Formaldehyde HCHO 300.0 ppb 8 hours TWA (Time-Weighted Average) DFG
Hydrogen Sulfide H2S 5.0 ppm 8 hours TWA (Time-Weighted Average) DFG
Ammonia NH3 20000.0 ppb 8 hours TWA (Time-Weighted Average) DFG
Toluene C7H8 50000.0 ppb 8 hours TWA (Time-Weighted Average) DFG
Xylene C8H10 100000.0 ppb 8 hours TWA (Time-Weighted Average) DFG
Acetaldehyde CH3CHO 50.0 ppm 8 hours TWA (Time-Weighted Average) DFG
Acetaldehyde CH3CHO 100.0 ppm ceiling DFG
Carbon dioxide CO2 5000.0 ppm 8 hours TWA (Time-Weighted Average) NIOSH
Carbon dioxide CO2 30000.0 ppm ceiling NIOSH
Carbon monoxide CO 35.0 ppm 8 hours TWA (Time-Weighted Average) NIOSH
Carbon monoxide CO 200.0 ppm ceiling NIOSH
Lead Pb 50.0 μg/m3 8 hours TWA (Time-Weighted Average) NIOSH
Nitrogen dioxide NO2 1000.0 ppb ceiling NIOSH
Ozone O3 100.0 ppb ceiling NIOSH
Sulfur dioxide SO2 2000.0 ppb 8 hours TWA (Time-Weighted Average) NIOSH
Sulfur dioxide SO2 5000.0 ppb ceiling NIOSH
Formaldehyde HCHO 16.0 ppb 8 hours TWA (Time-Weighted Average) NIOSH
Formaldehyde HCHO 100.0 ppb ceiling NIOSH
Benzene C6H6 323.0 μg/m3 8 hours TWA (Time-Weighted Average) 0.1 ppm NIOSH
Benzo[a]pyrene BaP 0.01 ppt 8 hours TWA (Time-Weighted Average) 0.1 mg/m3 NIOSH
Arsenic As 2.0 μg/m3 ceiling NIOSH
Nickel Ni 15.0 μg/m3 8 hours TWA (Time-Weighted Average) 0.1 mg/m3 NIOSH
Hydrogen Sulfide H2S 10.0 ppm ceiling NIOSH
Ammonia NH3 25000.0 ppb 8 hours TWA (Time-Weighted Average) NIOSH
Ammonia NH3 35000.0 ppb ceiling NIOSH
Toluene C7H8 100000.0 ppb 8 hours TWA (Time-Weighted Average) NIOSH
Toluene C7H8 150000.0 ppb ceiling NIOSH
Xylene C8H10 100000.0 ppb 8 hours TWA (Time-Weighted Average) NIOSH
Xylene C8H10 150000.0 ppb ceiling NIOSH
Acrolein C3H40 100.0 ppb 8 hours TWA (Time-Weighted Average) NIOSH
Acrolein C3H40 300.0 ppb 15 minutes STEL (Short-Term Exposure Limit) NIOSH
Carbon monoxide CO 5.0 ppm 8 hours Maximum desirable level EnvCAN
Carbon monoxide CO 13.0 ppm 1 hour Maximum desirable level EnvCAN
Carbon monoxide CO 13.0 ppm 8 hours Maximum acceptable level EnvCAN
Carbon monoxide CO 31.0 ppm 1 hour Maximum acceptable level EnvCAN
Nitrogen dioxide NO2 30.0 ppb 1 year Maximum desirable level EnvCAN
Nitrogen dioxide NO2 50.0 ppb 1 year Maximum acceptable level EnvCAN
Nitrogen dioxide NO2 210.0 ppb 1 hour Maximum acceptable level EnvCAN
Ozone O3 50.0 ppb 1 hour Maximum desirable level EnvCAN
Ozone O3 80.0 ppb 1 hour Maximum acceptable level EnvCAN
Total suspended particles TSP 60.0 μg/m3 1 year Maximum desirable level EnvCAN
Total suspended particles TSP 70.0 μg/m3 1 year Maximum acceptable level EnvCAN
Total suspended particles TSP 120.0 μg/m3 24 hours Maximum acceptable level EnvCAN
Sulfur dioxide SO2 10.0 ppb 1 year Maximum desirable level EnvCAN
Sulfur dioxide SO2 60.0 ppb 24 hours Maximum desirable level EnvCAN
Sulfur dioxide SO2 170.0 ppb 1 hour Maximum desirable level EnvCAN
Sulfur dioxide SO2 20.0 ppb 1 year Maximum acceptable level EnvCAN
Sulfur dioxide SO2 110.0 ppb 24 hours Maximum acceptable level EnvCAN
Sulfur dioxide SO2 340.0 ppb 1 hour Maximum acceptable level EnvCAN
Carbon monoxide CO 25.0 ppm 1 hour HealthCAN
Carbon monoxide CO 10.0 ppm 24 hours HealthCAN
Nitrogen dioxide NO2 90.0 ppb 1 hour HealthCAN
Nitrogen dioxide NO2 11.0 ppb 24 hours HealthCAN
Ozone O3 20.0 ppb 8 hours HealthCAN
Radon Rd 200.0 Bq/m3 Not specified HealthCAN
Formaldehyde HCHO 100.0 ppb 1 hour HealthCAN
Formaldehyde HCHO 40.0 ppb 8 hours HealthCAN
Toluene C7H8 4000.0 ppb 8 hours HealthCAN
Toluene C7H8 600.0 ppb 24 hours HealthCAN
Xylene C8H10 24.0 ppb Ceiling Indoor Air Reference Level HealthCAN
Acetaldehyde CH3CHO 0.8 ppm 1 hour 795 ppb HealthCAN
Acetaldehyde CH3CHO 0.15 ppm 24 hours 157 ppb HealthCAN
Acrolein C3H40 0.15 ppb Ceiling Indoor Air Reference Level HealthCAN
Radiofrequencies RF 26666666 μW/m2 Ceiling Uncontrolled environment, whole body mass average, 100 kHz-6GHz (0.08 W/kg) HealthCAN
Radiofrequencies RF 533333333 μW/m2 Ceiling Uncontrolled environment, spatially averaged over head, neck and trunck, 100 kHz-6GHz (1.6 W/kg) HealthCAN
Radiofrequencies RF 1333333333 μW/m2 Ceiling Uncontrolled environment, spatially averaged in the limbs, 100 kHz-6GHz (4 W/kg) HealthCAN
Radiofrequencies RF 133333333 μW/m2 Ceiling Controlled environment, whole body mass average, 100 kHz-6GHz (0.4 W/kg) HealthCAN
Radiofrequencies RF 2666666 μW/m2 Ceiling Controlled environment, spatially averaged over head, neck and trunck, 100 kHz-6GHz (8 W/kg) HealthCAN
Radiofrequencies RF 6666666666 μW/m2 Ceiling Controlled environment, spatially averaged in the limbs, 100 kHz-6GHz (20 W/kg) HealthCAN
Radiofrequencies RF 8944000 μW/m2 Ceiling 20-48 MHz, depends on frequency, 8944000/f^0.5, uncontrolled environment HealthCAN
Radiofrequencies RF 1291000.0 μW/m2 Ceiling 48-300 MHz, uncontrolled environment HealthCAN
Radiofrequencies RF 26190 μW/m2 Ceiling 300-6000 MHz, depends on frequency, 26190/f^0.6834, uncontrolled environment HealthCAN
Radiofrequencies RF 666666666 μW/m2 Ceiling Uncontrolled environment, spatially averaged over head, neck trunck, 100 kHz-10 GHz (2 W/kg) ICNIRP
Radiofrequencies RF 1333333333 μW/m2 Ceiling Uncontrolled environment, spatially averaged in the limbs, 100 kHz-10 GHz (4 W/kg) ICNIRP
Radiofrequencies RF 133333333 μW/m2 Ceiling Controlled environment, whole body mass average, 100 kHz-10 GHz (0.4 W/kg) ICNIRP
Radiofrequencies RF 3333333333 μW/m2 Ceiling Controlled environment, spatially averaged over head and trunck, 100 kHz-6GHz (10 W/kg) ICNIRP
Radiofrequencies RF 6666666666 μW/m2 Ceiling Controlled environment, spatially averaged in the limbs, 100 kHz-10 GHz (20 W/kg) ICNIRP
AC electric fields AC EF 12004 V/m Ceiling For controlled environment, 3 kHz-10 MHz (depends on frequency, 2.7 * 10^-4 * f ) HealthCAN
AC electric fields AC EF 6752 V/m Ceiling For uncontrolled environment, 3 kHz-10 MHz (depends on frequency, 1.35 * 10^-4 * f ) HealthCAN
Carbon dioxide CO2 800.0 ppm Ceiling For class A++ (great), kindergartens, schools and offices DK
Carbon dioxide CO2 900.0 ppm Ceiling For class A+ (good), offices DK
Carbon dioxide CO2 1000.0 ppm Ceiling For class A+ (good) for kindergartens and schools and class A (satisfactory) for offices DK
Carbon dioxide CO2 1200.0 ppm Ceiling For class A (satisfactory), kindergartens and schools DK
Carbon dioxide CO2 1500.0 ppm Ceiling For class B (below the requirements), kindergartens, schools and offices DK
Carbon dioxide CO2 1500.0 ppm Floor For class E (poor), kindergartens, schools and offices DK
Radon Rd 100.0 Bq/m3 Ceiling For class A (satisfactory), A+ (good) and A++ (great), for residences, kindergartens, schools and offices DK
Radon Rd 200.0 Bq/m3 Ceiling For class B (below the requirements), for residences, kindergartens, schools and offices DK
Radon Rd 200.0 Bq/m3 Floor For class E (poor), for residences, kindergartens, schools and offices DK
Formaldehyde HCHO 80.0 ppb Ceiling For class A (satisfactory), A+(good) and A++ (great), 0.1 mg/m3, for residences, kindergartens, schools and offices DK
Formaldehyde HCHO 160.0 ppb Ceiling For class B (below the requirements) 0.2 mg/m3, for residences, kindergartens, schools and offices DK
Formaldehyde HCHO 160.0 ppb Floor For class E (poor) 0.2 mg/m3, for residences, kindergartens, schools and offices DK
None None 2000000 None None 10-20 MHz, uncontrolled environment None
Carbon dioxide CO2 WHO IAQ
Carbon dioxide CO2 WHO IAQ
Carbon dioxide CO2 WHO IAQ
Carbon monoxide CO 6.0 ppm 24 hours 7 mg/m3 WHO IAQ
Carbon monoxide CO 8.6 ppm 8 hours 10 mg/m3 WHO IAQ
Carbon monoxide CO 30.0 ppm 1 hour 35 mg/m3 WHO IAQ
Carbon monoxide CO 86.0 ppm 15 minutes 100 mg/m3 WHO IAQ
Carbon monoxide CO WHO IAQ
Lead Pb WHO IAQ
Lead Pb WHO IAQ
Lead Pb WHO IAQ
Nitrogen dioxide NO2 21.0 ppb 1 year 40 μg/m3 WHO IAQ
Nitrogen dioxide NO2 105.0 ppb 1 hour 200 μg/m3 WHO IAQ
Nitrogen dioxide NO2 WHO IAQ
Nitrogen dioxide NO2 WHO IAQ
Ozone O3 WHO IAQ
Ozone O3 WHO IAQ
Ozone O3 WHO IAQ
Particles <2.5 μm PM2.5 WHO IAQ
Particles <2.5 μm PM2.5 WHO IAQ
Particles <2.5 μm PM2.5 WHO IAQ
Particles <10 μm PM10 WHO IAQ
Particles <10 μm PM10 WHO IAQ
Particles <10 μm PM10 WHO IAQ
Total suspended particles TSP WHO IAQ
Total suspended particles TSP WHO IAQ
Total suspended particles TSP WHO IAQ
Radon Rd No guidelines provided, only radon concentrations associated with excess lifetime risk WHO IAQ
Radon Rd WHO IAQ
Radon Rd WHO IAQ
Sulfur dioxide SO2 WHO IAQ
Sulfur dioxide SO2 WHO IAQ
Sulfur dioxide SO2 WHO IAQ
Formaldehyde HCHO 80.0 ppb 30 minutes 0.1 mg/m3 WHO IAQ
Formaldehyde HCHO WHO IAQ
Formaldehyde HCHO WHO IAQ
Benzene C6H6 No safe level of exposure can be recommended WHO IAQ
Benzene C6H6 WHO IAQ
Benzene C6H6 WHO IAQ
Total volatile organic compounds TVOC WHO IAQ
Total volatile organic compounds TVOC WHO IAQ
Total volatile organic compounds TVOC WHO IAQ
Benzo[a]pyrene BaP No threshold can be determined and all indoor exposures are considered relevant to health WHO IAQ
Benzo[a]pyrene BaP WHO IAQ
Benzo[a]pyrene BaP WHO IAQ
Arsenic As WHO IAQ
Arsenic As WHO IAQ
Arsenic As WHO IAQ
Cadmium Cd WHO IAQ
Cadmium Cd WHO IAQ
Cadmium Cd WHO IAQ
Nickel Ni WHO IAQ
Nickel Ni WHO IAQ
Nickel Ni WHO IAQ
Nitrogen monoxide NO WHO IAQ
Nitrogen monoxide NO WHO IAQ
Nitrogen monoxide NO WHO IAQ
Total bacterial counts TBC WHO IAQ
Total bacterial counts TBC WHO IAQ
Total bacterial counts TBC WHO IAQ
Total fungal counts TFC WHO IAQ
Total fungal counts TFC WHO IAQ
Total fungal counts TFC WHO IAQ
Hydrogen Sulfide H2S WHO IAQ
Hydrogen Sulfide H2S WHO IAQ
Hydrogen Sulfide H2S WHO IAQ
Ammonia NH3 WHO IAQ
Ammonia NH3 WHO IAQ
Ammonia NH3 WHO IAQ
Toluene C7H8 WHO IAQ
Toluene C7H8 WHO IAQ
Toluene C7H8 WHO IAQ
Xylene C8H10 WHO IAQ
Xylene C8H10 WHO IAQ
Xylene C8H10 WHO IAQ
Room air temperature Ta WHO IAQ
Room air temperature Ta WHO IAQ
Room air temperature Ta WHO IAQ
Operative temperature Top WHO IAQ
Operative temperature Top WHO IAQ
Operative temperature Top WHO IAQ
Mean radiant temperature Tmr WHO IAQ
Mean radiant temperature Tmr WHO IAQ
Mean radiant temperature Tmr WHO IAQ
Relative humidity RH WHO IAQ
Relative humidity RH WHO IAQ
Relative humidity RH WHO IAQ
Air movement v WHO IAQ
Air movement v WHO IAQ
Air movement v WHO IAQ
Light I WHO IAQ
Light I WHO IAQ
Light I WHO IAQ
Sound Lp WHO IAQ
Sound Lp WHO IAQ
Sound Lp WHO IAQ
Radiofrequencies RF WHO IAQ
Radiofrequencies RF WHO IAQ
Radiofrequencies RF WHO IAQ
DC magnetic fields DC MF WHO IAQ
DC magnetic fields DC MF WHO IAQ
DC magnetic fields DC MF WHO IAQ
AC magnetic fields AC MF WHO IAQ
AC magnetic fields AC MF WHO IAQ
AC magnetic fields AC MF WHO IAQ
DC electric fields DC EF WHO IAQ
DC electric fields DC EF WHO IAQ
DC electric fields DC EF WHO IAQ
AC electric fields AC EF WHO IAQ
AC electric fields AC EF WHO IAQ
AC electric fields AC EF WHO IAQ
Thermal comfort parameters
Parameter Symbol Level Unit Average Time Note Organization
Carbon dioxide CO2 1100.0 ppm Ceiling 700 ppm above outdoor air levels ASHRAE
Carbon monoxide CO 9.0 ppm 8 hours ASHRAE
Lead Pb 1.5 μg/m3 3 months ASHRAE
Nitrogen dioxide NO2 52.0 ppb 1 year 100 μg/m3 ASHRAE
Nitrogen dioxide NO2 247.0 ppb 24 hours 470 μg/m3 ASHRAE
Ozone O3 50.0 ppb 8 hours ASHRAE
Particles <2.5 μm PM2.5 15.0 μg/m3 Not specified ASHRAE
Particles <10 μm PM10 50.0 μg/m3 1 year ASHRAE
Radon Rd 148.0 Bq/m3 ASHRAE
Sulfur dioxide SO2 30.0 ppb 1 year 80 μg/m3 ASHRAE
Formaldehyde HCHO 27.0 ppb 8 hours ASHRAE
Formaldehyde HCHO 81.0 ppb 30 minutes ASHRAE
Total volatile organic compounds TVOC cannot be given ASHRAE
Carbon dioxide CO2 1000.0 ppm Ceiling DOSH
Carbon monoxide CO 10.0 ppm 8 hours DOSH
Ozone O3 50.0 ppb 8 hours DOSH
Total suspended particles TSP 150.0 μg/m3 8 hours Respirable particulates DOSH
Formaldehyde HCHO 100.0 ppb 8 hours DOSH
Total volatile organic compounds TVOC 3000.0 ppb 8 hours DOSH
Total bacterial counts TBC 500.0 cfu/m³ DOSH
Total fungal counts TFC 1000.0 cfu/m³ DOSH
Room air temperature Ta 23.0 °C Floor DOSH
Room air temperature Ta 26.0 °C Ceiling DOSH
Relative humidity RH 40.0 % Floor DOSH
Relative humidity RH 70.0 % Ceiling DOSH
Air movement v 0.15 m/s Floor DOSH
Air movement v 0,5 m/s Ceiling DOSH
Carbon monoxide CO 8.6 ppm 8 hours limit value (10 mg/m3) EC
Carbon monoxide CO 25.9 ppm 1 hour 30 mg/m3 EC
Lead Pb 0.5 μg/m3 1 year EC
Nitrogen dioxide NO2 21.0 ppb 1 year 40 μg/m3 EC
Nitrogen dioxide NO2 105.0 ppb 1 hour 200 μg/m3 EC
Ozone O3 60.0 ppb 8 hours Target value (120 μg/m3) EC
Ozone O3 91.0 ppb 8 hours information threshold (180 μg/m3) EC
Ozone O3 121.0 ppb 8 hours alert threshold (240 μg/m3) EC
Particles <2.5 μm PM2.5 25.0 μg/m3 24 hours EC
Particles <10 μm PM10 50.0 μg/m3 24 hours EC
Sulfur dioxide SO2 47.0 ppb 24 hours limit value (125 μg/m3) EC
Sulfur dioxide SO2 132.0 ppb 1 hour Limit value (350 μg/m3) EC
Sulfur dioxide SO2 188.0 ppb 1 hour Alert threshold (500 μg/m3) EC
Benzene C6H6 5.0 μg/m3 1 year limit value EC
Carbon dioxide CO2 750.0 ppm Ceiling 350 ppm above outdoor concentration, category 1 (here assuming ambient concentration of 400 ppm) EN 15251
Carbon dioxide CO2 900.0 ppm Ceiling 500 ppm above outdoor concentration, category 2 (here assuming ambient concentration of 400 ppm) EN 15251
Carbon dioxide CO2 1200.0 ppm ceiling 800 ppm above outdoor concentration, category 3 (here assuming ambient concentration of 400 ppm) EN 15251
Carbon dioxide CO2 2000.0 ppm Floor > 800 ppm above outdoor concentration, category 4 (here assuming ambient concentration of 400 ppm) EN 15251
Operative temperature Top 21.0 °C Floor winter, residential building (living space) Category 1 EN 15251
Operative temperature Top 25.5 °C Ceiling summer, residential building (living space) Category 1 EN 15251
Operative temperature Top 20.0 °C Floor winter, residential building (living space) Category 2 EN 15251
Operative temperature Top 26.0 °C Ceiling summer, residential building (living space) Category 2 EN 15251
Operative temperature Top 18.0 °C Floor winter, residential building (living space) Category 3 EN 15251
Operative temperature Top 27.0 °C Ceiling summer, residential building (living space) Category 3 EN 15251
Relative humidity RH 30.0 % Floor Category 1 EN 15251
Relative humidity RH 50.0 % Ceiling Category 1 EN 15251
Relative humidity RH 25.0 % Floor Category 2 EN 15251
Relative humidity RH 60.0 % Ceiling Category 2 EN 15251
Relative humidity RH 20.0 % Floor Category 3 EN 15251
Relative humidity RH 70.0 % Ceiling Category 3 EN 15251
Light I 500.0 lx Floor office buildings, design illumination level EN 15251
Light I 300.0 lx Floor classrooms EN 15251
Light I 500.0 lx Floor classrooms for adult education EN 15251
Sound Lp 32.0 dB(A) Ceiling design value, living room EN 15251
Sound Lp 26.0 dB(A) Ceiling design value, bedroom EN 15251
Sound Lp 35.0 dB(A) Ceiling design value, small offices and conference room EN 15251
Sound Lp 40.0 dB(A) Ceiling design value, landscaped offices and office cubicles EN 15251
Carbon monoxide CO 9.0 ppm 8 hours May exceed once pr. year EPA
Lead Pb 0.15 μg/m3 3 months EPA
Nitrogen dioxide NO2 100.0 ppb 1 hour EPA
Ozone O3 70.0 ppb 8 hours EPA
Particles <2.5 μm PM2.5 35.0 μg/m3 24 hour EPA
Particles <10 μm PM10 150.0 μg/m3 24 hour EPA
Sulfur dioxide SO2 75.0 ppb 1 hour EPA
Radiofrequencies RF 10000.0 μW/m2 Ceiling For Radio broadcast (FM), Daytime EUROPAEM
Radiofrequencies RF 100.0 μW/m2 Ceiling For GSM (2G) 900/1800 MHz, DECT, UMTS (3G), LTE (4G), Daytime EUROPAEM
Radiofrequencies RF 10.0 μW/m2 Ceiling For GSM (2G) 900/1800 MHz, DECT, UMTS (3G), LTE (4G), Nighttime EUROPAEM
Radiofrequencies RF 0.1 μW/m2 Ceiling For GGPRS (2.5G) with PTCCH, DAB+, Wi-Fi 2.4/5.6 GHz, Sensitive populations EUROPAEM
AC magnetic fields AC MF 10.0 mG Ceiling Daytime, ELF (Extremely Low Frequency) (1000 nT) EUROPAEM
AC magnetic fields AC MF 10.0 mG Ceiling Nighttime, ELF (Extremely Low Frequency) (1000 nT) EUROPAEM
AC magnetic fields AC MF 3.0 mG Ceiling Sensitive populations, ELF (Extremely Low Frequency) (300 nT) EUROPAEM
AC magnetic fields AC MF 1.0 mG 24 hours Daytime, ELF (Extremely Low Frequency) (100 nT) EUROPAEM
AC magnetic fields AC MF 1.0 mG 24 hours Nighttime, ELF (Extremely Low Frequency) (100 nT) EUROPAEM
AC magnetic fields AC MF 0.3 mG 24 hours Sensitive populations, ELF (Extremely Low Frequency) (30 nT) EUROPAEM
AC electric fields AC EF 10.0 V/m Ceiling Daytime, ELF (Extremely Low Frequency) EUROPAEM
AC electric fields AC EF 1.0 V/m Ceiling Nighttime, ELF (Extremely Low Frequency) EUROPAEM
AC electric fields AC EF 0.3 V/m Ceiling Sensitive populations, ELF (Extremely Low Frequency) EUROPAEM
Carbon dioxide CO2 750.0 ppm 24 hours S1 - very good, assuming ambiant CO2 concentration of 400 ppm FiSIAQ
Carbon dioxide CO2 950.0 ppm 24 hours S2 - good, assuming ambiant CO2 concentration of 400 ppm FiSIAQ
Carbon dioxide CO2 1200.0 ppm 24 hours S3 - satisfactory, assuming ambiant CO2 concentration of 400 ppm FiSIAQ
Particles <2.5 μm PM2.5 10.0 μg/m³ 24 hours S1 - very good FiSIAQ
Particles <2.5 μm PM2.5 10.0 μg/m³ 24 hours S2 - good FiSIAQ
Particles <2.5 μm PM2.5 25.0 μg/m³ 24 hours S3 - satisfactory FiSIAQ
Radon Rd 100.0 Bq/m³ Not specified S1 - very good & S2 - good, duration determined by a measurement method approved by Radiation and Nuclear Safety Authority FiSIAQ
Radon Rd 200.0 Bq/m³ Not specified S3 - satisfactory, duration determined by a measurement method approved by Radiation and Nuclear Safety Authority FiSIAQ
Operative temperature Top 20.5 °C Floor S1 - very good, for daily mean outdoor temperature <0°C FiSIAQ
Operative temperature Top 22.5 °C Ceiling S1 - very good, for daily mean outdoor temperature <0°C FiSIAQ
Operative temperature Top 22.0 °C Floor S1 - very good, for daily mean outdoor temperature >20°C FiSIAQ
Operative temperature Top 25.0 °C Ceiling S1 - very good, for daily mean outdoor temperature >20°C FiSIAQ
Operative temperature Top 20.5 °C floor S2 - very good, for daily mean outdoor temperature <0°C FiSIAQ
Operative temperature Top 23.0 °C ceiling S2 - very good, for daily mean outdoor temperature <0°C FiSIAQ
Air movement v 0.15 m/s Ceiling Tair = 21-23 °C - S1, very good FiSIAQ
Air movement v 0.2 m/s Ceiling Tair = 25 °C - S1, very good FiSIAQ
Air movement v 0.25 m/s Ceiling Tair = 25 °C - S2 good FiSIAQ
Carbon dioxide CO2 1000.0 ppm 8 hours HKIAQO
Carbon monoxide CO 25.8 ppm 1 hour 30000 µg/m3 HKIAQO
Carbon monoxide CO 8.6 ppm 8 hours 10000 µg/m3 HKIAQO
Nitrogen dioxide NO2 105.0 ppb 1 hour 200 µg/m3 HKIAQO
Nitrogen dioxide NO2 26.0 ppb 8 hours 50 µg/m3 HKIAQO
Particles <10 μm PM10 180.0 µg/m3 8 hours HKIAQO
Formaldehyde HCHO 80.0 ppb 1 hour 100 µg/m3 HKIAQO
Formaldehyde HCHO 50.0 µg/m3 8 hours HKIAQO
Total bacterial counts TBC 1000.0 cfu/m³ 8 hours HKIAQO
Carbon dioxide CO2 1000.0 ppm 8 hours good class HKSAR
Carbon dioxide CO2 800.0 ppm 8 hours Excellent class HKSAR
Carbon monoxide CO 6.1 ppm 8 hours good class HKSAR
Carbon monoxide CO 1.7 ppm 8 hours Excellent class HKSAR
Lead Pb 0.5 μg/m3 1 year From the Hong Kong Air Quality objectives, 3 exceedances allowed HKSAR
Nitrogen dioxide NO2 80.0 ppb 8 hours good class HKSAR
Nitrogen dioxide NO2 21.0 ppb 8 hours Excellent class HKSAR
Nitrogen dioxide NO2 106.0 ppb 1 hour good class HKSAR
Nitrogen dioxide NO2 53.0 ppb 1 hour Excellent class HKSAR
Ozone O3 61.0 ppb 8 hours good class HKSAR
Ozone O3 25.0 ppb 8 hours Excellent class HKSAR
Particles <2.5 μm PM2.5 75.0 μg/m3 24 hours From the Hong Kong Air Quality objectives, 9 exceedances allowed HKSAR
Particles <10 μm PM10 100.0 μg/m3 8 hours good class HKSAR
Particles <10 μm PM10 20.0 μg/m3 8 hours Excellent class HKSAR
Radon Rd 167.0 Bq/m3 8 hours good class HKSAR
Radon Rd 150.0 Bq/m3 8 hours Excellent class HKSAR
Sulfur dioxide SO2 188.0 ppb 10 minutes From the Hong Kong Air Quality objectives (500 µg/m3 ) HKSAR
Formaldehyde HCHO 81.0 ppb 8 hours good class HKSAR
Formaldehyde HCHO 24.0 ppb 8 hours Excellent class HKSAR
Formaldehyde HCHO 81.0 ppb 30 minutes good class HKSAR
Formaldehyde HCHO 57.0 ppb 30 minutes Excellent class HKSAR
Benzene C6H6 17 μg/m3 8 hours HKSAR
Total volatile organic compounds TVOC 261.0 ppb 8 hours good class HKSAR
Total volatile organic compounds TVOC 87.0 ppb 8 hours Excellent class HKSAR
Benzo[a]pyrene BaP 0.00014 ppt 8 hours HKSAR
Total bacterial counts TBC 1000.0 cfu/m3 8 hours good class HKSAR
Total bacterial counts TBC 500.0 cfu/m3 8 hours Excellent class HKSAR
Carbon dioxide CO2 5000.0 ppm 8 hours HSE
Carbon dioxide CO2 15000.0 ppm 15 minutes HSE
Carbon monoxide CO 20.0 ppm 8 hours HSE
Carbon monoxide CO 100.0 ppm 15 minutes HSE
Nitrogen dioxide NO2 500.0 ppb 8 hours HSE
Nitrogen dioxide NO2 1000.0 ppb 15 minutes HSE
Ozone O3 200.0 ppb 15 minutes HSE
Sulfur dioxide SO2 500.0 ppb 8 hours HSE
Sulfur dioxide SO2 1000 ppm 15 minutes HSE
Formaldehyde HCHO 2000.0 ppb 8 hours HSE
Formaldehyde HCHO 2000.0 ppb 15 minutes HSE
Benzene C6H6 3250 μg/m3 8 hours HSE
Carbon dioxide CO2 600.0 ppm Ceiling No Anomaly IBN
Carbon dioxide CO2 1000.0 ppm Ceiling Slight Anomaly IBN
Carbon dioxide CO2 1500.0 ppm Ceiling Severe Anomaly IBN
Carbon dioxide CO2 1500.0 ppm Floor Extreme Anomaly >1500ppm IBN
Radon Rd 30.0 Bq/m3 Ceiling No Anomaly IBN
Radon Rd 60.0 Bq/m3 Ceiling Slight Anomaly IBN
Radon Rd 200.0 Bq/m3 Ceiling Severe Anomaly IBN
Radon Rd 200.0 Bq/m3 Floor Extreme Anomaly IBN
Formaldehyde HCHO 16.0 ppb Ceiling No Anomaly (20 μg/m3) IBN
Formaldehyde HCHO 40.0 ppb Ceiling Slight Anomaly (50 μg/m3) IBN
Formaldehyde HCHO 80.0 ppb Ceiling Severe Anomaly (100 μg/m3) IBN
Formaldehyde HCHO 80.0 ppb Floor Extreme Anomaly (>100 μg/m3) IBN
Total volatile organic compounds TVOC 50.0 ppb Ceiling No Anomaly (100 μg/m3) IBN
Total volatile organic compounds TVOC 150.0 ppb Ceiling Slight Anomaly (300 μg/m3) IBN
Total volatile organic compounds TVOC 500.0 ppb Ceiling Severe Anomaly (1000 μg/m3) IBN
Total volatile organic compounds TVOC 500.0 ppb Floor Extreme Anomaly (>1000 μg/m3) IBN
Relative humidity RH 40.0 % Floor No Anomaly (between 40 and 60%) IBN
Relative humidity RH 30.0 % Floor Slight Anomaly (between 30-40% or between 60-70%) IBN
Relative humidity RH 20.0 % Floor Severe Anomaly (between 20-30% or between 70-80%) IBN
Relative humidity RH 20.0 % Ceiling Extreme Anomaly (<20% or > 80%) IBN
Relative humidity RH 60 % Ceiling No Anomaly (between 40 and 60%) IBN
Relative humidity RH 70 % Ceiling Slight Anomaly (between 30-40% or between 60-70%) IBN
Relative humidity RH 80 % Ceiling Severe Anomaly (between 20-30% or between 70-80%) IBN
Relative humidity RH 80 % Floor Extreme Anomaly (<20% or > 80%) IBN
Radiofrequencies RF 0.1 μW/m2 Ceiling No Anomaly IBN
Radiofrequencies RF 10.0 μW/m2 Ceiling Slight Anomaly IBN
Radiofrequencies RF 1000.0 μW/m2 Ceiling Severe Anomaly IBN
Radiofrequencies RF 1000.0 μW/m2 Floor Extreme Anomaly IBN
DC magnetic fields DC MF 1.0 μT Ceiling No Anomaly (values for the deviation of the flux density) IBN
DC magnetic fields DC MF 2.0 μT Ceiling Slight Anomaly (values for the deviation of the flux density) IBN
DC magnetic fields DC MF 10.0 μT Ceiling Severe Anomaly (values for the deviation of the flux density) IBN
DC magnetic fields DC MF 10.0 μT Floor Extreme Anomaly (values for the deviation of the flux density) IBN
AC magnetic fields AC MF 0.2 mG Ceiling No Anomaly (20nT), Values apply to frequencies up to and around 50 (60) Hz, higher frequencies should be assessed more critically IBN
AC magnetic fields AC MF 1.0 mG Ceiling Slight Anomaly (100 nT), Values apply to frequencies up to and around 50 (60) Hz, higher frequencies should be assessed more critically IBN
AC magnetic fields AC MF 5.0 mG Ceiling Severe Anomaly (500 nT), Values apply to frequencies up to and around 50 (60) Hz, higher frequencies should be assessed more critically IBN
AC magnetic fields AC MF 5.0 mG Floor Extreme Anomaly (>500 nT), Values apply to frequencies up to and around 50 (60) Hz, higher frequencies should be assessed more critically IBN
DC electric fields DC EF 100.0 V Ceiling No Anomaly IBN
DC electric fields DC EF 500.0 V Ceiling Slight Anomaly IBN
DC electric fields DC EF 2000.0 V Ceiling Severe Anomaly IBN
DC electric fields DC EF 2000.0 V Floor Extreme Anomaly IBN
AC electric fields AC EF 0.3 V/m Ceiling No Anomaly/ potential free, Values apply to frequencies up to and around 50 (60) Hz, higher frequencies should be assessed more critically IBN
AC electric fields AC EF 1.5 V/m Ceiling Slight Anomaly, potential free, Values apply to frequencies up to and around 50 (60) Hz, higher frequencies should be assessed more critically IBN
AC electric fields AC EF 10.0 V/m Ceiling Severe Anomaly, potential free, Values apply to frequencies up to and around 50 (60) Hz, higher frequencies should be assessed more critically IBN
AC electric fields AC EF 10.0 V/m Floor Extreme Anomaly, potential free, Values apply to frequencies up to and around 50 (60) Hz, higher frequencies should be assessed more critically IBN
Carbon dioxide CO2 1000.0 ppm Ceiling If the only CO2 source is exhaled breath IDPH
Carbon dioxide CO2 5000.0 ppm ceiling If there are other CO2 sources than exhaled breath IDPH
Carbon monoxide CO 9.0 ppm Ceiling IDPH
Nitrogen dioxide NO2 50.0 ppb 24 hours IDPH
Ozone O3 80.0 ppb Ceiling IDPH
Particles <2.5 μm PM2.5 65.0 μg/m3 24 hours IDPH
Particles <10 μm PM10 150.0 μg/m3 24 hours IDPH
Radon Rd 148.0 Bq/m3 not specified 4 pCi/L IDPH
Formaldehyde HCHO 100.0 ppb Ceiling For offices IDPH
Formaldehyde HCHO 30.0 ppb Ceiling For homes IDPH
Room air temperature Ta 20.0 °C Floor in winter (68 F) IDPH
Room air temperature Ta 24.0 °C Ceiling in winter (75F) IDPH
Room air temperature Ta 23.0 °C Floor in summer (73 F) IDPH
Room air temperature Ta 26.0 °C Ceiling In summer (79 F) IDPH
Relative humidity RH 20.0 % Floor IDPH
Relative humidity RH 60.0 % Ceiling IDPH
Carbon dioxide CO2 1000.0 ppm 8 hours IEE
Carbon monoxide CO 9.0 ppm 8 hours IEE
Ozone O3 50.0 ppb 8 hours IEE
Total suspended particles TSP 150.0 μg/m3 Ceiling Respirable particles with aerodynamic diameters less than 10 μm IEE
Formaldehyde HCHO 100.0 ppb 8 hours IEE
Total volatile organic compounds TVOC 3000.0 ppb Ceiling Total photoionisable compounds, reference to toluene IEE
Total bacterial counts TBC 500.0 CFU/m3 Ceiling IEE
Total fungal counts TFC 500.0 CFU/m3 Ceiling IEE
Room air temperature Ta 22.5 oC Floor At workstation within occupied zone IEE
Room air temperature Ta 25.5 oC Ceiling IEE
Relative humidity RH 70.0 % Ceiling At workstation within occupied zone IEE
Air movement v 0.25 m/s Ceiling At workstation within occupied zone IEE
Carbon dioxide CO2 1000.0 ppm Ceiling KEPA
Carbon monoxide CO 8.6 ppm 8 hours 10 mg/m3 KEPA
Carbon monoxide CO 100.0 mg/m3 15 minutes 100 mg/m3 KEPA
Carbon monoxide CO 52.0 ppm 30 minutes 60 mg/m3 KEPA
Carbon monoxide CO 60.0 ppm 1 hour KEPA
Lead Pb 0.5 μg/m3 1 year KEPA
Nitrogen dioxide NO2 52.0 ppb 24 hours 0.1 mg/m3 KEPA
Nitrogen dioxide NO2 346.0 ppb 30 minutes 0.66 mg/m3 KEPA
Nitrogen dioxide NO2 105.0 ppb 1 hour 0.2 mg/m3 KEPA
Ozone O3 101.0 ppb 8 hours 0.2 mg/m3 KEPA
Ozone O3 118.0 ppb 1 hour 0.235 mg/m3 KEPA
Ozone O3 56.0 ppb 24 hours 0.12 mg/m3 KEPA
Ozone O3 30.0 ppb 1 year KEPA
Total suspended particles TSP 230.0 μg/m3 24 hours KEPA
Total suspended particles TSP 75.0 μg/m3 1 year KEPA
Radon Rd 148.0 Bq/m3 1 year 4 picocuries/L KEPA
Formaldehyde HCHO 80.0 ppb 30 minutes 0.1 mg/m3 KEPA
Formaldehyde HCHO 96.0 ppb Ceiling 0.12 mg/m3 KEPA
Benzene C6H6 325 μg/m3 8 hours 0.1 ppm KEPA
Benzene C6H6 3250 μg/m3 15 minutes 1 ppm KEPA
Total volatile organic compounds TVOC 3000.0 ppb Not specified KEPA
Carbon monoxide CO 10.0 ppm 24 hours MOE
Carbon monoxide CO 20.0 ppm 8 hours MOE
Nitrogen dioxide NO2 60.0 ppb 24 hours MOE
Particles <2.5 μm PM2.5 15.0 μg/m3 1 year MOE
Particles <2.5 μm PM2.5 35.0 μg/m3 24 hours MOE
Total suspended particles TSP 100.0 μg/m3 24 hours MOE
Total suspended particles TSP 200 μg/m3 1 hour MOE
Sulfur dioxide SO2 40.0 ppb 24 hours MOE
Sulfur dioxide SO2 100.0 ppb 1 hour MOE
Benzene C6H6 3.0 μg/m3 1 year MOE
Carbon dioxide CO2 5000.0 ppm 8 hours OSHA
Carbon monoxide CO 50.0 ppm 8 hours OSHA
Lead Pb 50.0 μg/m3 8 hours OSHA
Nitrogen dioxide NO2 5000.0 ppb Ceiling OSHA
Ozone O3 100.0 ppb 8 hours OSHA
Sulfur dioxide SO2 5000.0 ppb 8 hours OSHA
Formaldehyde HCHO 750.0 ppb 8 hours OSHA
Formaldehyde HCHO 2000.0 ppb 15 minutes OSHA
Benzene C6H6 32362.0 μg/m3 8 hours 10 ppm OSHA
Benzene C6H6 161810.0 μg/m3 10 minutes 50 ppm OSHA
Radiofrequencies RF 10000000.0 μW/m2 10 minutes For frequencies from 10 MHz to 100 GHz (10 mW/cm2) OSHA
Carbon dioxide CO2 1000.0 ppm 24 hours SEPA
Carbon monoxide CO 8.6 ppm 1 hour 10 mg/m3 SEPA
Nitrogen dioxide NO2 126.0 ppb 1 hour 0.24 mg/m3 SEPA
Ozone O3 80.0 ppb 1 hour 0.16 mg/m3 SEPA
Particles <10 μm PM10 150.0 μg/m3 24 hours 0.15 mg/m3 SEPA
Radon Rd 400.0 Bq/m3 1 year SEPA
Sulfur dioxide SO2 188.0 ppb 1 hour 0.5 mg/m3 SEPA
Formaldehyde HCHO 80.0 ppb 1 hour 0.1 mg/m3 SEPA
Benzene C6H6 110.0 μg/m3 1 hour SEPA
Total volatile organic compounds TVOC 300.0 ppb 8 hours 0.6 mg/m3 SEPA
Ammonia NH3 283.0 ppb 1 hour 0.2 mg/m3 SEPA
Toluene C7H8 52.0 ppb 1 hour 0.2 mg/m3 SEPA
Xylene C8H10 45.0 ppb 1 hour 0.2 mg/m3 SEPA
Room air temperature Ta 22.0 °C Floor summer SEPA
Room air temperature Ta 28.0 °C Ceiling summer SEPA
Room air temperature Ta 16.0 °C Floor winter SEPA
Room air temperature Ta 24.0 °C ceiling winter SEPA
Relative humidity RH 40.0 % Floor summer SEPA
Relative humidity RH 80.0 % Ceiling summer SEPA
Relative humidity RH 30.0 % Floor winter SEPA
Relative humidity RH 60.0 % ceiling winter SEPA
Air movement v 0.3 m/s Ceiling summer SEPA
Air movement v 0.2 m/s Ceiling winter SEPA
Carbon dioxide CO2 5000.0 ppm 8 hours SWA
Carbon dioxide CO2 30000.0 ppm 15 minutes SWA
Carbon monoxide CO 30.0 ppm 8 hours SWA
Lead Pb 50.0 μg/m3 8 hours SWA
Nitrogen dioxide NO2 3000.0 ppb 8 hours SWA
Nitrogen dioxide NO2 5000.0 ppb 15 minutes SWA
Ozone O3 1000.0 ppb Ceiling SWA
Sulfur dioxide SO2 2000.0 ppb 8 hours SWA
Sulfur dioxide SO2 5000.0 ppb 15 minutes SWA
Formaldehyde HCHO 1000.0 ppb 8 hours SWA
Formaldehyde HCHO 2000.0 ppb 15 minutes SWA
Benzene C6H6 3200 μg/m3 8 hours SWA
Lead Pb 0.0 μg/m3 Ceiling The product must not contain this substance. TCO
Lead Pb 0.004 μg/m3 Ceiling Only for batteries (given in % of weight, not μg/m3) TCO
Cadmium Cd 0.0 μg/m3 Ceiling The product must not contain this substance. TCO
Cadmium Cd 0.002 μg/m3 Ceiling Only for batteries (given in % of weight, not μg/m3) TCO
Radiofrequencies RF 13333333.0 μW/m2 Not specified For headets (absorbed emission energy in unit volumes of brain tissue) for any cube of 10 g phantom tissue (0.04 W/kg) TCO
AC magnetic fields AC MF 2.0 mG Not specified Band I: 5 Hz to 2 kHz (200 nT) TCO
AC magnetic fields AC MF 0.25 mG Not specified Band II: 2 kHz to 400 kHz (25 nT) TCO
AC electric fields AC EF 10.0 V/m Not specified Band I: 5 Hz to 2 kHz TCO
AC electric fields AC EF 1.0 V/m Not specified Band II: 2 kHz to 400 kHz TCO
Carbon monoxide CO 9.0 ppm Ceiling monitored in regularly occupied spaces minimum once per year WELL
Nitrogen dioxide NO2 21.0 ppb Ceiling monitored in regularly occupied spaces minimum once per year WELL
Ozone O3 51.0 ppb Ceiling monitored in regularly occupied spaces minimum once per year WELL
Particles <2.5 μm PM2.5 15.0 μg/m3 Ceiling monitored in regularly occupied spaces minimum once per year WELL
Particles <2.5 μm PM2.5 25.0 μg/m3 ceiling Only for locations if the annual average ambient PM2.5 level is 35 μg/m3 or higher. In this case the maximum WELL certification achievable is gold. WELL
Particles <10 μm PM10 50.0 μg/m3 Ceiling monitored in regularly occupied spaces minimum once per year WELL
Particles <10 μm PM10 50.0 μg/m3 ceiling Only for locations if the annual average ambient PM2.5 level is 35 μg/m3 or higher. In this case the maximum WELL certification achievable is gold. WELL
Radon Rd 150.0 Bq/m3 Ceiling One test is conducted per 2,300 m2 [25,000 ft2] of regularly occupied space at or below grade. WELL
Formaldehyde HCHO 27.0 ppb Ceiling monitored in regularly occupied spaces minimum once per year WELL
Benzene C6H6 30.0 μg/m3 Ceiling monitored in regularly occupied spaces minimum once per year WELL
Nitrogen dioxide NO2 21.0 ppb 1 year 40 μg/m3 WHO
Nitrogen dioxide NO2 105.0 ppb 1 hour 200 μg/m3 WHO OAQ
Ozone O3 50.0 ppb 8 hours 100 μg/m3 WHO OAQ
Particles <2.5 μm PM2.5 25.0 μg/m3 24 hours WHO OAQ
Particles <2.5 μm PM2.5 10.0 μg/m3 1 year WHO OAQ
Particles <10 μm PM10 50.0 μg/m3 24 hours WHO OAQ
Particles <10 μm PM10 20.0 μg/m3 1 year WHO OAQ
Sulfur dioxide SO2 20.0 ug/m3 24 hours 20 μg/m3 WHO OAQ
Sulfur dioxide SO2 500.0 ug/m3 10 minutes 500 μg/m3 WHO OAQ
Radiofrequencies RF 50000000.0 μW/m2 Ceiling Occupational, 10-300 GHz (50 W/m2), averaged over a 20 cm2 area ICNIRP
Radiofrequencies RF 10000000.0 μW/m2 Ceiling General public, 10-300 GHz ICNIRP
Radiofrequencies RF 133333333.0 μW/m2 30 minutes Occupational, 100 kHz - 10 GHz (0.4 W/kg whole body SAR) ICNIRP
Radiofrequencies RF 26666666.0 μW/m2 30 minutes General public, 100 kHz - 10 GHz (0.08 W/kg whole body SAR) ICNIRP
Radiofrequencies RF 26666666 μW/m2 Ceiling Uncontrolled environment, whole body mass average, 100 kHz-10 GHz (0.08 W/kg) ICNIRP
DC magnetic fields DC MF 2000000.0 μT Ceiling Limit for head and trunk exposure, occupational ICNIRP
DC magnetic fields DC MF 8000000.0 μT Ceiling Only if in controlled environment, occupational ICNIRP
DC magnetic fields DC MF 400000.0 μT Ceiling Exposure of any body part, general public ICNIRP
AC magnetic fields AC MF 2000000.0 mG Not specified Occupational, up to 1 Hz, unperturbed rms value (2x10^5 μT) ICNIRP
AC magnetic fields AC MF 98765 mG Not specified Occupational, 1-8 Hz, unperturbed rms value (depend on frequency, 2x10^5μT/f^2) ICNIRP
AC magnetic fields AC MF 15152 mG Not specified Occupational, 8-25 Hz, unperturbed rms value (depend on frequency, 2.5x10^4 μT/f) ICNIRP
AC magnetic fields AC MF 592 mG Not specified Occupational, 0.025-0.82 kHz, unperturbed rms value (depend on frequency, 25 μT/f) ICNIRP
AC magnetic fields AC MF 307.0 mG Not specified Occupational, 0.82-65 kHz, unperturbed rms value (30.7 μT) ICNIRP
AC magnetic fields AC MF 4 mG Not specified Occupational, 0.065-10 MHz, unperturbed rms value (depend on frequency, 2.0 μT/f) ICNIRP
AC magnetic fields AC MF 2 mG Not specified Occupational, 10-400 MHz, unperturbed rms value (0.2 μT) ICNIRP
AC magnetic fields AC MF 3 mG Not specified Occupational, 400-2000 MHz, unperturbed rms value (depend on frequency, 0.01 μT f^0.5) ICNIRP
AC magnetic fields AC MF 4.5 mG Not specified Occupational, 2-300 GHz, unperturbed rms value (0.45 μT) ICNIRP
AC electric fields AC EF 20000.0 V/m Not specified Occupational, 1-25 Hz, unperturbed rms value ICNIRP
AC electric fields AC EF 1183 V/m Not specified Occupational (level depends on frequency, 500/f), 0.025-0.82 kHz, unperturbed rms value ICNIRP
AC electric fields AC EF 610.0 V/m Not specified Occupational, 0.82 kHz -1 MHz, unperturbed rms value ICNIRP
AC electric fields AC EF 111 V/m Not specified Occupational (level depends on frequency, 610/f), 0.025-0.82 kHz, unperturbed rms value ICNIRP
AC electric fields AC EF 61.0 V/m Not specified Occupational, 10 - 400 MHz, unperturbed rms value ICNIRP
AC electric fields AC EF 104 V/m Not specified Occupational, 400-2000 MHz, unperturbed rms value ICNIRP
AC electric fields AC EF 137 V/m Not specified Occupational, 2-300 GHz, unperturbed rms value ICNIRP
AC electric fields AC EF 10000 V/m Not specified General public, 1-25 Hz, unperturbed rms value ICNIRP
AC electric fields AC EF 165 V/m Not specified General public (level depend on frequency, 250/f), 0.025-3 kHz, unperturbed rms value ICNIRP
AC electric fields AC EF 87 V/m Not specified General public, 3kHz-1 MHz, unperturbed rms value ICNIRP
AC electric fields AC EF 37 V/m Not specified General public (level depend on frequency, 87/f^0.5), 1-10 MHz, unperturbed rms value ICNIRP
AC electric fields AC EF 28 V/m Not specified General public, 10-400 MHz, unperturbed rms value ICNIRP
AC electric fields AC EF 48 V/m Not specified General public (level depend on frequency, 1.375f^0.5), 400-2000 MHz, unperturbed rms value ICNIRP
AC electric fields AC EF 61 V/m Not specified General public, 2-300 GHz, unperturbed rms value ICNIRP
Carbon dioxide CO2 10000.0 ppm 8 hours INSHT
Carbon dioxide CO2 30000.0 ppm 15 minutes INSHT
Carbon monoxide CO 35.0 ppm 8 hours INSHT
Carbon monoxide CO 200.0 ppm 15 minutes INSHT
Lead Pb 50.0 μg/m3 8 hours INSHT
Nitrogen dioxide NO2 1000.0 ppb 15 minutes INSHT
Ozone O3 100.0 ppb 8 hours INSHT
Ozone O3 300 ppm 15 minutes INSHT
Radon Rd 70.0 Bq/m3 INSHT
Sulfur dioxide SO2 20000.0 ppb 8 hours INSHT
Sulfur dioxide SO2 5.0 ppm 15 minutes INSHT
Formaldehyde HCHO 100.0 ppb Ceiling INSHT
Benzene C6H6 3250 μg/m3 Ceiling INSHT
Total volatile organic compounds TVOC 25000.0 ppb Ceiling 50 mg/m3 INSHT
Toluene C7H8 20000.0 ppb Ceiling INSHT
Room air temperature Ta 17.0 °C Floor sedentary jobs INSHT
Room air temperature Ta 22.0 °C Ceiling sedentary jobs INSHT
Room air temperature Ta 15.0 °C Floor ordinary jobs INSHT
Room air temperature Ta 18.0 °C Ceiling ordinary jobs INSHT
Room air temperature Ta 12.0 °C Floor work that requires physical effort INSHT
Room air temperature Ta 15.0 °C Ceiling work that requires physical effort INSHT
Relative humidity RH 40.0 % Floor INSHT
Relative humidity RH 60.0 % Ceiling INSHT
Air movement v 0.25 m/s normal temperature INSHT
Air movement v 0.75 m/s hot environments INSHT
Carbon dioxide CO2 5000.0 ppm 8 hours TLV-TWA (Threshold Limit Value-Time-Weighted Average) ACGIH
Carbon dioxide CO2 30000.0 ppm 15 minutes TLV-STEL (Threshold Limit Value-Short-Term Exposure Limit) ACGIH
Carbon monoxide CO 25.0 ppm 8 hours TLV-TWA (Threshold Limit Value-Time-Weighted Average) ACGIH
Lead Pb 50.0 μg/m3 8 hours TLV-TWA (Threshold Limit Value-Time-Weighted Average) ACGIH
Nitrogen dioxide NO2 200.0 ppb 8 hours TLV-TWA (Threshold Limit Value-Time-Weighted Average) ACGIH
Ozone O3 50.0 ppb 8 hours TLV-TWA (Threshold Limit Value-Time-Weighted Average) - Heavy work ACGIH
Ozone O3 100.0 ppb 8 hours TLV-TWA (Threshold Limit Value-Time-Weighted Average) - Light work ACGIH
Sulfur dioxide SO2 250.0 ppb 15 minutes TLV-STEL (Threshold Limit Value-Short-Term Exposure Limit) ACGIH
Formaldehyde HCHO 100.0 ppb 8 hours TLV-TWA (Threshold Limit Value-Time-Weighted Average) ACGIH
Formaldehyde HCHO ppb 300.0 15 minutes TLV-STEL (Threshold Limit Value-Short-Term Exposure Limit) ACGIH
Benzene C6H6 1618.0 μg/m3 8 hours TLV-TWA (Threshold Limit Value-Time-Weighted Average) 0.5 ppm ACGIH
Arsenic As 10.0 μg/m3 8 hours TLV-TWA (Threshold Limit Value-Time-Weighted Average) ACGIH
Cadmium Cd 10.0 μg/m3 8 hours TLV-TWA (Threshold Limit Value-Time-Weighted Average) ACGIH
Nickel Ni 100.0 μg/m3 8 hours TLV-TWA (Threshold Limit Value-Time-Weighted Average) Soluble inorganic compounds and nickel subsulfide ACGIH
Nickel Ni 200.0 μg/m3 8 hours TLV-TWA (Threshold Limit Value-Time-Weighted Average) Insoluble inorganic compounds ACGIH
Nickel Ni 1500.0 μg/m3 8 hours TLV-TWA (Threshold Limit Value-Time-Weighted Average) Elemental nickel ACGIH
Hydrogen Sulfide H2S 1.0 ppm 8 hours TLV-TWA (Threshold Limit Value-Time-Weighted Average) ACGIH
Hydrogen Sulfide H2S 5.0 ppm 15 minutes TLV-STEL (Threshold Limit Value-Short-Term Exposure Limit) ACGIH
Ammonia NH3 25000.0 ppb 8 hours TLV-TWA (Threshold Limit Value-Time-Weighted Average) ACGIH
Ammonia NH3 35000.0 ppb 15 minutes TLV-STEL (Threshold Limit Value-Short-Term Exposure Limit) ACGIH
Toluene C7H8 20000.0 ppb 8 hours TLV-TWA (Threshold Limit Value-Time-Weighted Average) ACGIH
Xylene C8H10 100000.0 ppb 8 hours TLV-TWA (Threshold Limit Value-Time-Weighted Average) ACGIH
Xylene C8H10 150000.0 ppb 15 minutes TLV-STEL (Threshold Limit Value-Short-Term Exposure Limit) ACGIH
Acetaldehyde CH3CHO 25.0 ppm 8 hours TLV-TWA (Threshold Limit Value-Time-Weighted Average) ACGIH
Acrolein C3H40 100.0 ppb 8 hours TLV-TWA (Threshold Limit Value-Time-Weighted Average) ACGIH
Carbon dioxide CO2 5000.0 ppm 8 hours TWA (Time-Weighted Average) DFG
Carbon monoxide CO 30.0 ppm 8 hours TWA (Time-Weighted Average) DFG
Nitrogen dioxide NO2 500.0 ppb 8 hours TWA (Time-Weighted Average) DFG
Sulfur dioxide SO2 1000.0 ppb 8 hours TWA (Time-Weighted Average) DFG
Formaldehyde HCHO 300.0 ppb 8 hours TWA (Time-Weighted Average) DFG
Hydrogen Sulfide H2S 5.0 ppm 8 hours TWA (Time-Weighted Average) DFG
Ammonia NH3 20000.0 ppb 8 hours TWA (Time-Weighted Average) DFG
Toluene C7H8 50000.0 ppb 8 hours TWA (Time-Weighted Average) DFG
Xylene C8H10 100000.0 ppb 8 hours TWA (Time-Weighted Average) DFG
Acetaldehyde CH3CHO 50.0 ppm 8 hours TWA (Time-Weighted Average) DFG
Acetaldehyde CH3CHO 100.0 ppm ceiling DFG
Carbon dioxide CO2 5000.0 ppm 8 hours TWA (Time-Weighted Average) NIOSH
Carbon dioxide CO2 30000.0 ppm ceiling NIOSH
Carbon monoxide CO 35.0 ppm 8 hours TWA (Time-Weighted Average) NIOSH
Carbon monoxide CO 200.0 ppm ceiling NIOSH
Lead Pb 50.0 μg/m3 8 hours TWA (Time-Weighted Average) NIOSH
Nitrogen dioxide NO2 1000.0 ppb ceiling NIOSH
Ozone O3 100.0 ppb ceiling NIOSH
Sulfur dioxide SO2 2000.0 ppb 8 hours TWA (Time-Weighted Average) NIOSH
Sulfur dioxide SO2 5000.0 ppb ceiling NIOSH
Formaldehyde HCHO 16.0 ppb 8 hours TWA (Time-Weighted Average) NIOSH
Formaldehyde HCHO 100.0 ppb ceiling NIOSH
Benzene C6H6 323.0 μg/m3 8 hours TWA (Time-Weighted Average) 0.1 ppm NIOSH
Benzo[a]pyrene BaP 0.01 ppt 8 hours TWA (Time-Weighted Average) 0.1 mg/m3 NIOSH
Arsenic As 2.0 μg/m3 ceiling NIOSH
Nickel Ni 15.0 μg/m3 8 hours TWA (Time-Weighted Average) 0.1 mg/m3 NIOSH
Hydrogen Sulfide H2S 10.0 ppm ceiling NIOSH
Ammonia NH3 25000.0 ppb 8 hours TWA (Time-Weighted Average) NIOSH
Ammonia NH3 35000.0 ppb ceiling NIOSH
Toluene C7H8 100000.0 ppb 8 hours TWA (Time-Weighted Average) NIOSH
Toluene C7H8 150000.0 ppb ceiling NIOSH
Xylene C8H10 100000.0 ppb 8 hours TWA (Time-Weighted Average) NIOSH
Xylene C8H10 150000.0 ppb ceiling NIOSH
Acrolein C3H40 100.0 ppb 8 hours TWA (Time-Weighted Average) NIOSH
Acrolein C3H40 300.0 ppb 15 minutes STEL (Short-Term Exposure Limit) NIOSH
Carbon monoxide CO 5.0 ppm 8 hours Maximum desirable level EnvCAN
Carbon monoxide CO 13.0 ppm 1 hour Maximum desirable level EnvCAN
Carbon monoxide CO 13.0 ppm 8 hours Maximum acceptable level EnvCAN
Carbon monoxide CO 31.0 ppm 1 hour Maximum acceptable level EnvCAN
Nitrogen dioxide NO2 30.0 ppb 1 year Maximum desirable level EnvCAN
Nitrogen dioxide NO2 50.0 ppb 1 year Maximum acceptable level EnvCAN
Nitrogen dioxide NO2 210.0 ppb 1 hour Maximum acceptable level EnvCAN
Ozone O3 50.0 ppb 1 hour Maximum desirable level EnvCAN
Ozone O3 80.0 ppb 1 hour Maximum acceptable level EnvCAN
Total suspended particles TSP 60.0 μg/m3 1 year Maximum desirable level EnvCAN
Total suspended particles TSP 70.0 μg/m3 1 year Maximum acceptable level EnvCAN
Total suspended particles TSP 120.0 μg/m3 24 hours Maximum acceptable level EnvCAN
Sulfur dioxide SO2 10.0 ppb 1 year Maximum desirable level EnvCAN
Sulfur dioxide SO2 60.0 ppb 24 hours Maximum desirable level EnvCAN
Sulfur dioxide SO2 170.0 ppb 1 hour Maximum desirable level EnvCAN
Sulfur dioxide SO2 20.0 ppb 1 year Maximum acceptable level EnvCAN
Sulfur dioxide SO2 110.0 ppb 24 hours Maximum acceptable level EnvCAN
Sulfur dioxide SO2 340.0 ppb 1 hour Maximum acceptable level EnvCAN
Carbon monoxide CO 25.0 ppm 1 hour HealthCAN
Carbon monoxide CO 10.0 ppm 24 hours HealthCAN
Nitrogen dioxide NO2 90.0 ppb 1 hour HealthCAN
Nitrogen dioxide NO2 11.0 ppb 24 hours HealthCAN
Ozone O3 20.0 ppb 8 hours HealthCAN
Radon Rd 200.0 Bq/m3 Not specified HealthCAN
Formaldehyde HCHO 100.0 ppb 1 hour HealthCAN
Formaldehyde HCHO 40.0 ppb 8 hours HealthCAN
Toluene C7H8 4000.0 ppb 8 hours HealthCAN
Toluene C7H8 600.0 ppb 24 hours HealthCAN
Xylene C8H10 24.0 ppb Ceiling Indoor Air Reference Level HealthCAN
Acetaldehyde CH3CHO 0.8 ppm 1 hour 795 ppb HealthCAN
Acetaldehyde CH3CHO 0.15 ppm 24 hours 157 ppb HealthCAN
Acrolein C3H40 0.15 ppb Ceiling Indoor Air Reference Level HealthCAN
Radiofrequencies RF 26666666 μW/m2 Ceiling Uncontrolled environment, whole body mass average, 100 kHz-6GHz (0.08 W/kg) HealthCAN
Radiofrequencies RF 533333333 μW/m2 Ceiling Uncontrolled environment, spatially averaged over head, neck and trunck, 100 kHz-6GHz (1.6 W/kg) HealthCAN
Radiofrequencies RF 1333333333 μW/m2 Ceiling Uncontrolled environment, spatially averaged in the limbs, 100 kHz-6GHz (4 W/kg) HealthCAN
Radiofrequencies RF 133333333 μW/m2 Ceiling Controlled environment, whole body mass average, 100 kHz-6GHz (0.4 W/kg) HealthCAN
Radiofrequencies RF 2666666 μW/m2 Ceiling Controlled environment, spatially averaged over head, neck and trunck, 100 kHz-6GHz (8 W/kg) HealthCAN
Radiofrequencies RF 6666666666 μW/m2 Ceiling Controlled environment, spatially averaged in the limbs, 100 kHz-6GHz (20 W/kg) HealthCAN
Radiofrequencies RF 8944000 μW/m2 Ceiling 20-48 MHz, depends on frequency, 8944000/f^0.5, uncontrolled environment HealthCAN
Radiofrequencies RF 1291000.0 μW/m2 Ceiling 48-300 MHz, uncontrolled environment HealthCAN
Radiofrequencies RF 26190 μW/m2 Ceiling 300-6000 MHz, depends on frequency, 26190/f^0.6834, uncontrolled environment HealthCAN
Radiofrequencies RF 666666666 μW/m2 Ceiling Uncontrolled environment, spatially averaged over head, neck trunck, 100 kHz-10 GHz (2 W/kg) ICNIRP
Radiofrequencies RF 1333333333 μW/m2 Ceiling Uncontrolled environment, spatially averaged in the limbs, 100 kHz-10 GHz (4 W/kg) ICNIRP
Radiofrequencies RF 133333333 μW/m2 Ceiling Controlled environment, whole body mass average, 100 kHz-10 GHz (0.4 W/kg) ICNIRP
Radiofrequencies RF 3333333333 μW/m2 Ceiling Controlled environment, spatially averaged over head and trunck, 100 kHz-6GHz (10 W/kg) ICNIRP
Radiofrequencies RF 6666666666 μW/m2 Ceiling Controlled environment, spatially averaged in the limbs, 100 kHz-10 GHz (20 W/kg) ICNIRP
AC electric fields AC EF 12004 V/m Ceiling For controlled environment, 3 kHz-10 MHz (depends on frequency, 2.7 * 10^-4 * f ) HealthCAN
AC electric fields AC EF 6752 V/m Ceiling For uncontrolled environment, 3 kHz-10 MHz (depends on frequency, 1.35 * 10^-4 * f ) HealthCAN
Carbon dioxide CO2 800.0 ppm Ceiling For class A++ (great), kindergartens, schools and offices DK
Carbon dioxide CO2 900.0 ppm Ceiling For class A+ (good), offices DK
Carbon dioxide CO2 1000.0 ppm Ceiling For class A+ (good) for kindergartens and schools and class A (satisfactory) for offices DK
Carbon dioxide CO2 1200.0 ppm Ceiling For class A (satisfactory), kindergartens and schools DK
Carbon dioxide CO2 1500.0 ppm Ceiling For class B (below the requirements), kindergartens, schools and offices DK
Carbon dioxide CO2 1500.0 ppm Floor For class E (poor), kindergartens, schools and offices DK
Radon Rd 100.0 Bq/m3 Ceiling For class A (satisfactory), A+ (good) and A++ (great), for residences, kindergartens, schools and offices DK
Radon Rd 200.0 Bq/m3 Ceiling For class B (below the requirements), for residences, kindergartens, schools and offices DK
Radon Rd 200.0 Bq/m3 Floor For class E (poor), for residences, kindergartens, schools and offices DK
Formaldehyde HCHO 80.0 ppb Ceiling For class A (satisfactory), A+(good) and A++ (great), 0.1 mg/m3, for residences, kindergartens, schools and offices DK
Formaldehyde HCHO 160.0 ppb Ceiling For class B (below the requirements) 0.2 mg/m3, for residences, kindergartens, schools and offices DK
Formaldehyde HCHO 160.0 ppb Floor For class E (poor) 0.2 mg/m3, for residences, kindergartens, schools and offices DK
None None 2000000 None None 10-20 MHz, uncontrolled environment None
Carbon dioxide CO2 WHO IAQ
Carbon dioxide CO2 WHO IAQ
Carbon dioxide CO2 WHO IAQ
Carbon monoxide CO 6.0 ppm 24 hours 7 mg/m3 WHO IAQ
Carbon monoxide CO 8.6 ppm 8 hours 10 mg/m3 WHO IAQ
Carbon monoxide CO 30.0 ppm 1 hour 35 mg/m3 WHO IAQ
Carbon monoxide CO 86.0 ppm 15 minutes 100 mg/m3 WHO IAQ
Carbon monoxide CO WHO IAQ
Lead Pb WHO IAQ
Lead Pb WHO IAQ
Lead Pb WHO IAQ
Nitrogen dioxide NO2 21.0 ppb 1 year 40 μg/m3 WHO IAQ
Nitrogen dioxide NO2 105.0 ppb 1 hour 200 μg/m3 WHO IAQ
Nitrogen dioxide NO2 WHO IAQ
Nitrogen dioxide NO2 WHO IAQ
Ozone O3 WHO IAQ
Ozone O3 WHO IAQ
Ozone O3 WHO IAQ
Particles <2.5 μm PM2.5 WHO IAQ
Particles <2.5 μm PM2.5 WHO IAQ
Particles <2.5 μm PM2.5 WHO IAQ
Particles <10 μm PM10 WHO IAQ
Particles <10 μm PM10 WHO IAQ
Particles <10 μm PM10 WHO IAQ
Total suspended particles TSP WHO IAQ
Total suspended particles TSP WHO IAQ
Total suspended particles TSP WHO IAQ
Radon Rd No guidelines provided, only radon concentrations associated with excess lifetime risk WHO IAQ
Radon Rd WHO IAQ
Radon Rd WHO IAQ
Sulfur dioxide SO2 WHO IAQ
Sulfur dioxide SO2 WHO IAQ
Sulfur dioxide SO2 WHO IAQ
Formaldehyde HCHO 80.0 ppb 30 minutes 0.1 mg/m3 WHO IAQ
Formaldehyde HCHO WHO IAQ
Formaldehyde HCHO WHO IAQ
Benzene C6H6 No safe level of exposure can be recommended WHO IAQ
Benzene C6H6 WHO IAQ
Benzene C6H6 WHO IAQ
Total volatile organic compounds TVOC WHO IAQ
Total volatile organic compounds TVOC WHO IAQ
Total volatile organic compounds TVOC WHO IAQ
Benzo[a]pyrene BaP No threshold can be determined and all indoor exposures are considered relevant to health WHO IAQ
Benzo[a]pyrene BaP WHO IAQ
Benzo[a]pyrene BaP WHO IAQ
Arsenic As WHO IAQ
Arsenic As WHO IAQ
Arsenic As WHO IAQ
Cadmium Cd WHO IAQ
Cadmium Cd WHO IAQ
Cadmium Cd WHO IAQ
Nickel Ni WHO IAQ
Nickel Ni WHO IAQ
Nickel Ni WHO IAQ
Nitrogen monoxide NO WHO IAQ
Nitrogen monoxide NO WHO IAQ
Nitrogen monoxide NO WHO IAQ
Total bacterial counts TBC WHO IAQ
Total bacterial counts TBC WHO IAQ
Total bacterial counts TBC WHO IAQ
Total fungal counts TFC WHO IAQ
Total fungal counts TFC WHO IAQ
Total fungal counts TFC WHO IAQ
Hydrogen Sulfide H2S WHO IAQ
Hydrogen Sulfide H2S WHO IAQ
Hydrogen Sulfide H2S WHO IAQ
Ammonia NH3 WHO IAQ
Ammonia NH3 WHO IAQ
Ammonia NH3 WHO IAQ
Toluene C7H8 WHO IAQ
Toluene C7H8 WHO IAQ
Toluene C7H8 WHO IAQ
Xylene C8H10 WHO IAQ
Xylene C8H10 WHO IAQ
Xylene C8H10 WHO IAQ
Room air temperature Ta WHO IAQ
Room air temperature Ta WHO IAQ
Room air temperature Ta WHO IAQ
Operative temperature Top WHO IAQ
Operative temperature Top WHO IAQ
Operative temperature Top WHO IAQ
Mean radiant temperature Tmr WHO IAQ
Mean radiant temperature Tmr WHO IAQ
Mean radiant temperature Tmr WHO IAQ
Relative humidity RH WHO IAQ
Relative humidity RH WHO IAQ
Relative humidity RH WHO IAQ
Air movement v WHO IAQ
Air movement v WHO IAQ
Air movement v WHO IAQ
Light I WHO IAQ
Light I WHO IAQ
Light I WHO IAQ
Sound Lp WHO IAQ
Sound Lp WHO IAQ
Sound Lp WHO IAQ
Radiofrequencies RF WHO IAQ
Radiofrequencies RF WHO IAQ
Radiofrequencies RF WHO IAQ
DC magnetic fields DC MF WHO IAQ
DC magnetic fields DC MF WHO IAQ
DC magnetic fields DC MF WHO IAQ
AC magnetic fields AC MF WHO IAQ
AC magnetic fields AC MF WHO IAQ
AC magnetic fields AC MF WHO IAQ
DC electric fields DC EF WHO IAQ
DC electric fields DC EF WHO IAQ
DC electric fields DC EF WHO IAQ
AC electric fields AC EF WHO IAQ
AC electric fields AC EF WHO IAQ
AC electric fields AC EF WHO IAQ
Electromagnetic radiation parameters
Parameter Symbol Level Unit Average Time Note Organization
Carbon dioxide CO2 1100.0 ppm Ceiling 700 ppm above outdoor air levels ASHRAE
Carbon monoxide CO 9.0 ppm 8 hours ASHRAE
Lead Pb 1.5 μg/m3 3 months ASHRAE
Nitrogen dioxide NO2 52.0 ppb 1 year 100 μg/m3 ASHRAE
Nitrogen dioxide NO2 247.0 ppb 24 hours 470 μg/m3 ASHRAE
Ozone O3 50.0 ppb 8 hours ASHRAE
Particles <2.5 μm PM2.5 15.0 μg/m3 Not specified ASHRAE
Particles <10 μm PM10 50.0 μg/m3 1 year ASHRAE
Radon Rd 148.0 Bq/m3 ASHRAE
Sulfur dioxide SO2 30.0 ppb 1 year 80 μg/m3 ASHRAE
Formaldehyde HCHO 27.0 ppb 8 hours ASHRAE
Formaldehyde HCHO 81.0 ppb 30 minutes ASHRAE
Total volatile organic compounds TVOC cannot be given ASHRAE
Carbon dioxide CO2 1000.0 ppm Ceiling DOSH
Carbon monoxide CO 10.0 ppm 8 hours DOSH
Ozone O3 50.0 ppb 8 hours DOSH
Total suspended particles TSP 150.0 μg/m3 8 hours Respirable particulates DOSH
Formaldehyde HCHO 100.0 ppb 8 hours DOSH
Total volatile organic compounds TVOC 3000.0 ppb 8 hours DOSH
Total bacterial counts TBC 500.0 cfu/m³ DOSH
Total fungal counts TFC 1000.0 cfu/m³ DOSH
Room air temperature Ta 23.0 °C Floor DOSH
Room air temperature Ta 26.0 °C Ceiling DOSH
Relative humidity RH 40.0 % Floor DOSH
Relative humidity RH 70.0 % Ceiling DOSH
Air movement v 0.15 m/s Floor DOSH
Air movement v 0,5 m/s Ceiling DOSH
Carbon monoxide CO 8.6 ppm 8 hours limit value (10 mg/m3) EC
Carbon monoxide CO 25.9 ppm 1 hour 30 mg/m3 EC
Lead Pb 0.5 μg/m3 1 year EC
Nitrogen dioxide NO2 21.0 ppb 1 year 40 μg/m3 EC
Nitrogen dioxide NO2 105.0 ppb 1 hour 200 μg/m3 EC
Ozone O3 60.0 ppb 8 hours Target value (120 μg/m3) EC
Ozone O3 91.0 ppb 8 hours information threshold (180 μg/m3) EC
Ozone O3 121.0 ppb 8 hours alert threshold (240 μg/m3) EC
Particles <2.5 μm PM2.5 25.0 μg/m3 24 hours EC
Particles <10 μm PM10 50.0 μg/m3 24 hours EC
Sulfur dioxide SO2 47.0 ppb 24 hours limit value (125 μg/m3) EC
Sulfur dioxide SO2 132.0 ppb 1 hour Limit value (350 μg/m3) EC
Sulfur dioxide SO2 188.0 ppb 1 hour Alert threshold (500 μg/m3) EC
Benzene C6H6 5.0 μg/m3 1 year limit value EC
Carbon dioxide CO2 750.0 ppm Ceiling 350 ppm above outdoor concentration, category 1 (here assuming ambient concentration of 400 ppm) EN 15251
Carbon dioxide CO2 900.0 ppm Ceiling 500 ppm above outdoor concentration, category 2 (here assuming ambient concentration of 400 ppm) EN 15251
Carbon dioxide CO2 1200.0 ppm ceiling 800 ppm above outdoor concentration, category 3 (here assuming ambient concentration of 400 ppm) EN 15251
Carbon dioxide CO2 2000.0 ppm Floor > 800 ppm above outdoor concentration, category 4 (here assuming ambient concentration of 400 ppm) EN 15251
Operative temperature Top 21.0 °C Floor winter, residential building (living space) Category 1 EN 15251
Operative temperature Top 25.5 °C Ceiling summer, residential building (living space) Category 1 EN 15251
Operative temperature Top 20.0 °C Floor winter, residential building (living space) Category 2 EN 15251
Operative temperature Top 26.0 °C Ceiling summer, residential building (living space) Category 2 EN 15251
Operative temperature Top 18.0 °C Floor winter, residential building (living space) Category 3 EN 15251
Operative temperature Top 27.0 °C Ceiling summer, residential building (living space) Category 3 EN 15251
Relative humidity RH 30.0 % Floor Category 1 EN 15251
Relative humidity RH 50.0 % Ceiling Category 1 EN 15251
Relative humidity RH 25.0 % Floor Category 2 EN 15251
Relative humidity RH 60.0 % Ceiling Category 2 EN 15251
Relative humidity RH 20.0 % Floor Category 3 EN 15251
Relative humidity RH 70.0 % Ceiling Category 3 EN 15251
Light I 500.0 lx Floor office buildings, design illumination level EN 15251
Light I 300.0 lx Floor classrooms EN 15251
Light I 500.0 lx Floor classrooms for adult education EN 15251
Sound Lp 32.0 dB(A) Ceiling design value, living room EN 15251
Sound Lp 26.0 dB(A) Ceiling design value, bedroom EN 15251
Sound Lp 35.0 dB(A) Ceiling design value, small offices and conference room EN 15251
Sound Lp 40.0 dB(A) Ceiling design value, landscaped offices and office cubicles EN 15251
Carbon monoxide CO 9.0 ppm 8 hours May exceed once pr. year EPA
Lead Pb 0.15 μg/m3 3 months EPA
Nitrogen dioxide NO2 100.0 ppb 1 hour EPA
Ozone O3 70.0 ppb 8 hours EPA
Particles <2.5 μm PM2.5 35.0 μg/m3 24 hour EPA
Particles <10 μm PM10 150.0 μg/m3 24 hour EPA
Sulfur dioxide SO2 75.0 ppb 1 hour EPA
Radiofrequencies RF 10000.0 μW/m2 Ceiling For Radio broadcast (FM), Daytime EUROPAEM
Radiofrequencies RF 100.0 μW/m2 Ceiling For GSM (2G) 900/1800 MHz, DECT, UMTS (3G), LTE (4G), Daytime EUROPAEM
Radiofrequencies RF 10.0 μW/m2 Ceiling For GSM (2G) 900/1800 MHz, DECT, UMTS (3G), LTE (4G), Nighttime EUROPAEM
Radiofrequencies RF 0.1 μW/m2 Ceiling For GGPRS (2.5G) with PTCCH, DAB+, Wi-Fi 2.4/5.6 GHz, Sensitive populations EUROPAEM
AC magnetic fields AC MF 10.0 mG Ceiling Daytime, ELF (Extremely Low Frequency) (1000 nT) EUROPAEM
AC magnetic fields AC MF 10.0 mG Ceiling Nighttime, ELF (Extremely Low Frequency) (1000 nT) EUROPAEM
AC magnetic fields AC MF 3.0 mG Ceiling Sensitive populations, ELF (Extremely Low Frequency) (300 nT) EUROPAEM
AC magnetic fields AC MF 1.0 mG 24 hours Daytime, ELF (Extremely Low Frequency) (100 nT) EUROPAEM
AC magnetic fields AC MF 1.0 mG 24 hours Nighttime, ELF (Extremely Low Frequency) (100 nT) EUROPAEM
AC magnetic fields AC MF 0.3 mG 24 hours Sensitive populations, ELF (Extremely Low Frequency) (30 nT) EUROPAEM
AC electric fields AC EF 10.0 V/m Ceiling Daytime, ELF (Extremely Low Frequency) EUROPAEM
AC electric fields AC EF 1.0 V/m Ceiling Nighttime, ELF (Extremely Low Frequency) EUROPAEM
AC electric fields AC EF 0.3 V/m Ceiling Sensitive populations, ELF (Extremely Low Frequency) EUROPAEM
Carbon dioxide CO2 750.0 ppm 24 hours S1 - very good, assuming ambiant CO2 concentration of 400 ppm FiSIAQ
Carbon dioxide CO2 950.0 ppm 24 hours S2 - good, assuming ambiant CO2 concentration of 400 ppm FiSIAQ
Carbon dioxide CO2 1200.0 ppm 24 hours S3 - satisfactory, assuming ambiant CO2 concentration of 400 ppm FiSIAQ
Particles <2.5 μm PM2.5 10.0 μg/m³ 24 hours S1 - very good FiSIAQ
Particles <2.5 μm PM2.5 10.0 μg/m³ 24 hours S2 - good FiSIAQ
Particles <2.5 μm PM2.5 25.0 μg/m³ 24 hours S3 - satisfactory FiSIAQ
Radon Rd 100.0 Bq/m³ Not specified S1 - very good & S2 - good, duration determined by a measurement method approved by Radiation and Nuclear Safety Authority FiSIAQ
Radon Rd 200.0 Bq/m³ Not specified S3 - satisfactory, duration determined by a measurement method approved by Radiation and Nuclear Safety Authority FiSIAQ
Operative temperature Top 20.5 °C Floor S1 - very good, for daily mean outdoor temperature <0°C FiSIAQ
Operative temperature Top 22.5 °C Ceiling S1 - very good, for daily mean outdoor temperature <0°C FiSIAQ
Operative temperature Top 22.0 °C Floor S1 - very good, for daily mean outdoor temperature >20°C FiSIAQ
Operative temperature Top 25.0 °C Ceiling S1 - very good, for daily mean outdoor temperature >20°C FiSIAQ
Operative temperature Top 20.5 °C floor S2 - very good, for daily mean outdoor temperature <0°C FiSIAQ
Operative temperature Top 23.0 °C ceiling S2 - very good, for daily mean outdoor temperature <0°C FiSIAQ
Air movement v 0.15 m/s Ceiling Tair = 21-23 °C - S1, very good FiSIAQ
Air movement v 0.2 m/s Ceiling Tair = 25 °C - S1, very good FiSIAQ
Air movement v 0.25 m/s Ceiling Tair = 25 °C - S2 good FiSIAQ
Carbon dioxide CO2 1000.0 ppm 8 hours HKIAQO
Carbon monoxide CO 25.8 ppm 1 hour 30000 µg/m3 HKIAQO
Carbon monoxide CO 8.6 ppm 8 hours 10000 µg/m3 HKIAQO
Nitrogen dioxide NO2 105.0 ppb 1 hour 200 µg/m3 HKIAQO
Nitrogen dioxide NO2 26.0 ppb 8 hours 50 µg/m3 HKIAQO
Particles <10 μm PM10 180.0 µg/m3 8 hours HKIAQO
Formaldehyde HCHO 80.0 ppb 1 hour 100 µg/m3 HKIAQO
Formaldehyde HCHO 50.0 µg/m3 8 hours HKIAQO
Total bacterial counts TBC 1000.0 cfu/m³ 8 hours HKIAQO
Carbon dioxide CO2 1000.0 ppm 8 hours good class HKSAR
Carbon dioxide CO2 800.0 ppm 8 hours Excellent class HKSAR
Carbon monoxide CO 6.1 ppm 8 hours good class HKSAR
Carbon monoxide CO 1.7 ppm 8 hours Excellent class HKSAR
Lead Pb 0.5 μg/m3 1 year From the Hong Kong Air Quality objectives, 3 exceedances allowed HKSAR
Nitrogen dioxide NO2 80.0 ppb 8 hours good class HKSAR
Nitrogen dioxide NO2 21.0 ppb 8 hours Excellent class HKSAR
Nitrogen dioxide NO2 106.0 ppb 1 hour good class HKSAR
Nitrogen dioxide NO2 53.0 ppb 1 hour Excellent class HKSAR
Ozone O3 61.0 ppb 8 hours good class HKSAR
Ozone O3 25.0 ppb 8 hours Excellent class HKSAR
Particles <2.5 μm PM2.5 75.0 μg/m3 24 hours From the Hong Kong Air Quality objectives, 9 exceedances allowed HKSAR
Particles <10 μm PM10 100.0 μg/m3 8 hours good class HKSAR
Particles <10 μm PM10 20.0 μg/m3 8 hours Excellent class HKSAR
Radon Rd 167.0 Bq/m3 8 hours good class HKSAR
Radon Rd 150.0 Bq/m3 8 hours Excellent class HKSAR
Sulfur dioxide SO2 188.0 ppb 10 minutes From the Hong Kong Air Quality objectives (500 µg/m3 ) HKSAR
Formaldehyde HCHO 81.0 ppb 8 hours good class HKSAR
Formaldehyde HCHO 24.0 ppb 8 hours Excellent class HKSAR
Formaldehyde HCHO 81.0 ppb 30 minutes good class HKSAR
Formaldehyde HCHO 57.0 ppb 30 minutes Excellent class HKSAR
Benzene C6H6 17 μg/m3 8 hours HKSAR
Total volatile organic compounds TVOC 261.0 ppb 8 hours good class HKSAR
Total volatile organic compounds TVOC 87.0 ppb 8 hours Excellent class HKSAR
Benzo[a]pyrene BaP 0.00014 ppt 8 hours HKSAR
Total bacterial counts TBC 1000.0 cfu/m3 8 hours good class HKSAR
Total bacterial counts TBC 500.0 cfu/m3 8 hours Excellent class HKSAR
Carbon dioxide CO2 5000.0 ppm 8 hours HSE
Carbon dioxide CO2 15000.0 ppm 15 minutes HSE
Carbon monoxide CO 20.0 ppm 8 hours HSE
Carbon monoxide CO 100.0 ppm 15 minutes HSE
Nitrogen dioxide NO2 500.0 ppb 8 hours HSE
Nitrogen dioxide NO2 1000.0 ppb 15 minutes HSE
Ozone O3 200.0 ppb 15 minutes HSE
Sulfur dioxide SO2 500.0 ppb 8 hours HSE
Sulfur dioxide SO2 1000 ppm 15 minutes HSE
Formaldehyde HCHO 2000.0 ppb 8 hours HSE
Formaldehyde HCHO 2000.0 ppb 15 minutes HSE
Benzene C6H6 3250 μg/m3 8 hours HSE
Carbon dioxide CO2 600.0 ppm Ceiling No Anomaly IBN
Carbon dioxide CO2 1000.0 ppm Ceiling Slight Anomaly IBN
Carbon dioxide CO2 1500.0 ppm Ceiling Severe Anomaly IBN
Carbon dioxide CO2 1500.0 ppm Floor Extreme Anomaly >1500ppm IBN
Radon Rd 30.0 Bq/m3 Ceiling No Anomaly IBN
Radon Rd 60.0 Bq/m3 Ceiling Slight Anomaly IBN
Radon Rd 200.0 Bq/m3 Ceiling Severe Anomaly IBN
Radon Rd 200.0 Bq/m3 Floor Extreme Anomaly IBN
Formaldehyde HCHO 16.0 ppb Ceiling No Anomaly (20 μg/m3) IBN
Formaldehyde HCHO 40.0 ppb Ceiling Slight Anomaly (50 μg/m3) IBN
Formaldehyde HCHO 80.0 ppb Ceiling Severe Anomaly (100 μg/m3) IBN
Formaldehyde HCHO 80.0 ppb Floor Extreme Anomaly (>100 μg/m3) IBN
Total volatile organic compounds TVOC 50.0 ppb Ceiling No Anomaly (100 μg/m3) IBN
Total volatile organic compounds TVOC 150.0 ppb Ceiling Slight Anomaly (300 μg/m3) IBN
Total volatile organic compounds TVOC 500.0 ppb Ceiling Severe Anomaly (1000 μg/m3) IBN
Total volatile organic compounds TVOC 500.0 ppb Floor Extreme Anomaly (>1000 μg/m3) IBN
Relative humidity RH 40.0 % Floor No Anomaly (between 40 and 60%) IBN
Relative humidity RH 30.0 % Floor Slight Anomaly (between 30-40% or between 60-70%) IBN
Relative humidity RH 20.0 % Floor Severe Anomaly (between 20-30% or between 70-80%) IBN
Relative humidity RH 20.0 % Ceiling Extreme Anomaly (<20% or > 80%) IBN
Relative humidity RH 60 % Ceiling No Anomaly (between 40 and 60%) IBN
Relative humidity RH 70 % Ceiling Slight Anomaly (between 30-40% or between 60-70%) IBN
Relative humidity RH 80 % Ceiling Severe Anomaly (between 20-30% or between 70-80%) IBN
Relative humidity RH 80 % Floor Extreme Anomaly (<20% or > 80%) IBN
Radiofrequencies RF 0.1 μW/m2 Ceiling No Anomaly IBN
Radiofrequencies RF 10.0 μW/m2 Ceiling Slight Anomaly IBN
Radiofrequencies RF 1000.0 μW/m2 Ceiling Severe Anomaly IBN
Radiofrequencies RF 1000.0 μW/m2 Floor Extreme Anomaly IBN
DC magnetic fields DC MF 1.0 μT Ceiling No Anomaly (values for the deviation of the flux density) IBN
DC magnetic fields DC MF 2.0 μT Ceiling Slight Anomaly (values for the deviation of the flux density) IBN
DC magnetic fields DC MF 10.0 μT Ceiling Severe Anomaly (values for the deviation of the flux density) IBN
DC magnetic fields DC MF 10.0 μT Floor Extreme Anomaly (values for the deviation of the flux density) IBN
AC magnetic fields AC MF 0.2 mG Ceiling No Anomaly (20nT), Values apply to frequencies up to and around 50 (60) Hz, higher frequencies should be assessed more critically IBN
AC magnetic fields AC MF 1.0 mG Ceiling Slight Anomaly (100 nT), Values apply to frequencies up to and around 50 (60) Hz, higher frequencies should be assessed more critically IBN
AC magnetic fields AC MF 5.0 mG Ceiling Severe Anomaly (500 nT), Values apply to frequencies up to and around 50 (60) Hz, higher frequencies should be assessed more critically IBN
AC magnetic fields AC MF 5.0 mG Floor Extreme Anomaly (>500 nT), Values apply to frequencies up to and around 50 (60) Hz, higher frequencies should be assessed more critically IBN
DC electric fields DC EF 100.0 V Ceiling No Anomaly IBN
DC electric fields DC EF 500.0 V Ceiling Slight Anomaly IBN
DC electric fields DC EF 2000.0 V Ceiling Severe Anomaly IBN
DC electric fields DC EF 2000.0 V Floor Extreme Anomaly IBN
AC electric fields AC EF 0.3 V/m Ceiling No Anomaly/ potential free, Values apply to frequencies up to and around 50 (60) Hz, higher frequencies should be assessed more critically IBN
AC electric fields AC EF 1.5 V/m Ceiling Slight Anomaly, potential free, Values apply to frequencies up to and around 50 (60) Hz, higher frequencies should be assessed more critically IBN
AC electric fields AC EF 10.0 V/m Ceiling Severe Anomaly, potential free, Values apply to frequencies up to and around 50 (60) Hz, higher frequencies should be assessed more critically IBN
AC electric fields AC EF 10.0 V/m Floor Extreme Anomaly, potential free, Values apply to frequencies up to and around 50 (60) Hz, higher frequencies should be assessed more critically IBN
Carbon dioxide CO2 1000.0 ppm Ceiling If the only CO2 source is exhaled breath IDPH
Carbon dioxide CO2 5000.0 ppm ceiling If there are other CO2 sources than exhaled breath IDPH
Carbon monoxide CO 9.0 ppm Ceiling IDPH
Nitrogen dioxide NO2 50.0 ppb 24 hours IDPH
Ozone O3 80.0 ppb Ceiling IDPH
Particles <2.5 μm PM2.5 65.0 μg/m3 24 hours IDPH
Particles <10 μm PM10 150.0 μg/m3 24 hours IDPH
Radon Rd 148.0 Bq/m3 not specified 4 pCi/L IDPH
Formaldehyde HCHO 100.0 ppb Ceiling For offices IDPH
Formaldehyde HCHO 30.0 ppb Ceiling For homes IDPH
Room air temperature Ta 20.0 °C Floor in winter (68 F) IDPH
Room air temperature Ta 24.0 °C Ceiling in winter (75F) IDPH
Room air temperature Ta 23.0 °C Floor in summer (73 F) IDPH
Room air temperature Ta 26.0 °C Ceiling In summer (79 F) IDPH
Relative humidity RH 20.0 % Floor IDPH
Relative humidity RH 60.0 % Ceiling IDPH
Carbon dioxide CO2 1000.0 ppm 8 hours IEE
Carbon monoxide CO 9.0 ppm 8 hours IEE
Ozone O3 50.0 ppb 8 hours IEE
Total suspended particles TSP 150.0 μg/m3 Ceiling Respirable particles with aerodynamic diameters less than 10 μm IEE
Formaldehyde HCHO 100.0 ppb 8 hours IEE
Total volatile organic compounds TVOC 3000.0 ppb Ceiling Total photoionisable compounds, reference to toluene IEE
Total bacterial counts TBC 500.0 CFU/m3 Ceiling IEE
Total fungal counts TFC 500.0 CFU/m3 Ceiling IEE
Room air temperature Ta 22.5 oC Floor At workstation within occupied zone IEE
Room air temperature Ta 25.5 oC Ceiling IEE
Relative humidity RH 70.0 % Ceiling At workstation within occupied zone IEE
Air movement v 0.25 m/s Ceiling At workstation within occupied zone IEE
Carbon dioxide CO2 1000.0 ppm Ceiling KEPA
Carbon monoxide CO 8.6 ppm 8 hours 10 mg/m3 KEPA
Carbon monoxide CO 100.0 mg/m3 15 minutes 100 mg/m3 KEPA
Carbon monoxide CO 52.0 ppm 30 minutes 60 mg/m3 KEPA
Carbon monoxide CO 60.0 ppm 1 hour KEPA
Lead Pb 0.5 μg/m3 1 year KEPA
Nitrogen dioxide NO2 52.0 ppb 24 hours 0.1 mg/m3 KEPA
Nitrogen dioxide NO2 346.0 ppb 30 minutes 0.66 mg/m3 KEPA
Nitrogen dioxide NO2 105.0 ppb 1 hour 0.2 mg/m3 KEPA
Ozone O3 101.0 ppb 8 hours 0.2 mg/m3 KEPA
Ozone O3 118.0 ppb 1 hour 0.235 mg/m3 KEPA
Ozone O3 56.0 ppb 24 hours 0.12 mg/m3 KEPA
Ozone O3 30.0 ppb 1 year KEPA
Total suspended particles TSP 230.0 μg/m3 24 hours KEPA
Total suspended particles TSP 75.0 μg/m3 1 year KEPA
Radon Rd 148.0 Bq/m3 1 year 4 picocuries/L KEPA
Formaldehyde HCHO 80.0 ppb 30 minutes 0.1 mg/m3 KEPA
Formaldehyde HCHO 96.0 ppb Ceiling 0.12 mg/m3 KEPA
Benzene C6H6 325 μg/m3 8 hours 0.1 ppm KEPA
Benzene C6H6 3250 μg/m3 15 minutes 1 ppm KEPA
Total volatile organic compounds TVOC 3000.0 ppb Not specified KEPA
Carbon monoxide CO 10.0 ppm 24 hours MOE
Carbon monoxide CO 20.0 ppm 8 hours MOE
Nitrogen dioxide NO2 60.0 ppb 24 hours MOE
Particles <2.5 μm PM2.5 15.0 μg/m3 1 year MOE
Particles <2.5 μm PM2.5 35.0 μg/m3 24 hours MOE
Total suspended particles TSP 100.0 μg/m3 24 hours MOE
Total suspended particles TSP 200 μg/m3 1 hour MOE
Sulfur dioxide SO2 40.0 ppb 24 hours MOE
Sulfur dioxide SO2 100.0 ppb 1 hour MOE
Benzene C6H6 3.0 μg/m3 1 year MOE
Carbon dioxide CO2 5000.0 ppm 8 hours OSHA
Carbon monoxide CO 50.0 ppm 8 hours OSHA
Lead Pb 50.0 μg/m3 8 hours OSHA
Nitrogen dioxide NO2 5000.0 ppb Ceiling OSHA
Ozone O3 100.0 ppb 8 hours OSHA
Sulfur dioxide SO2 5000.0 ppb 8 hours OSHA
Formaldehyde HCHO 750.0 ppb 8 hours OSHA
Formaldehyde HCHO 2000.0 ppb 15 minutes OSHA
Benzene C6H6 32362.0 μg/m3 8 hours 10 ppm OSHA
Benzene C6H6 161810.0 μg/m3 10 minutes 50 ppm OSHA
Radiofrequencies RF 10000000.0 μW/m2 10 minutes For frequencies from 10 MHz to 100 GHz (10 mW/cm2) OSHA
Carbon dioxide CO2 1000.0 ppm 24 hours SEPA
Carbon monoxide CO 8.6 ppm 1 hour 10 mg/m3 SEPA
Nitrogen dioxide NO2 126.0 ppb 1 hour 0.24 mg/m3 SEPA
Ozone O3 80.0 ppb 1 hour 0.16 mg/m3 SEPA
Particles <10 μm PM10 150.0 μg/m3 24 hours 0.15 mg/m3 SEPA
Radon Rd 400.0 Bq/m3 1 year SEPA
Sulfur dioxide SO2 188.0 ppb 1 hour 0.5 mg/m3 SEPA
Formaldehyde HCHO 80.0 ppb 1 hour 0.1 mg/m3 SEPA
Benzene C6H6 110.0 μg/m3 1 hour SEPA
Total volatile organic compounds TVOC 300.0 ppb 8 hours 0.6 mg/m3 SEPA
Ammonia NH3 283.0 ppb 1 hour 0.2 mg/m3 SEPA
Toluene C7H8 52.0 ppb 1 hour 0.2 mg/m3 SEPA
Xylene C8H10 45.0 ppb 1 hour 0.2 mg/m3 SEPA
Room air temperature Ta 22.0 °C Floor summer SEPA
Room air temperature Ta 28.0 °C Ceiling summer SEPA
Room air temperature Ta 16.0 °C Floor winter SEPA
Room air temperature Ta 24.0 °C ceiling winter SEPA
Relative humidity RH 40.0 % Floor summer SEPA
Relative humidity RH 80.0 % Ceiling summer SEPA
Relative humidity RH 30.0 % Floor winter SEPA
Relative humidity RH 60.0 % ceiling winter SEPA
Air movement v 0.3 m/s Ceiling summer SEPA
Air movement v 0.2 m/s Ceiling winter SEPA
Carbon dioxide CO2 5000.0 ppm 8 hours SWA
Carbon dioxide CO2 30000.0 ppm 15 minutes SWA
Carbon monoxide CO 30.0 ppm 8 hours SWA
Lead Pb 50.0 μg/m3 8 hours SWA
Nitrogen dioxide NO2 3000.0 ppb 8 hours SWA
Nitrogen dioxide NO2 5000.0 ppb 15 minutes SWA
Ozone O3 1000.0 ppb Ceiling SWA
Sulfur dioxide SO2 2000.0 ppb 8 hours SWA
Sulfur dioxide SO2 5000.0 ppb 15 minutes SWA
Formaldehyde HCHO 1000.0 ppb 8 hours SWA
Formaldehyde HCHO 2000.0 ppb 15 minutes SWA
Benzene C6H6 3200 μg/m3 8 hours SWA
Lead Pb 0.0 μg/m3 Ceiling The product must not contain this substance. TCO
Lead Pb 0.004 μg/m3 Ceiling Only for batteries (given in % of weight, not μg/m3) TCO
Cadmium Cd 0.0 μg/m3 Ceiling The product must not contain this substance. TCO
Cadmium Cd 0.002 μg/m3 Ceiling Only for batteries (given in % of weight, not μg/m3) TCO
Radiofrequencies RF 13333333.0 μW/m2 Not specified For headets (absorbed emission energy in unit volumes of brain tissue) for any cube of 10 g phantom tissue (0.04 W/kg) TCO
AC magnetic fields AC MF 2.0 mG Not specified Band I: 5 Hz to 2 kHz (200 nT) TCO
AC magnetic fields AC MF 0.25 mG Not specified Band II: 2 kHz to 400 kHz (25 nT) TCO
AC electric fields AC EF 10.0 V/m Not specified Band I: 5 Hz to 2 kHz TCO
AC electric fields AC EF 1.0 V/m Not specified Band II: 2 kHz to 400 kHz TCO
Carbon monoxide CO 9.0 ppm Ceiling monitored in regularly occupied spaces minimum once per year WELL
Nitrogen dioxide NO2 21.0 ppb Ceiling monitored in regularly occupied spaces minimum once per year WELL
Ozone O3 51.0 ppb Ceiling monitored in regularly occupied spaces minimum once per year WELL
Particles <2.5 μm PM2.5 15.0 μg/m3 Ceiling monitored in regularly occupied spaces minimum once per year WELL
Particles <2.5 μm PM2.5 25.0 μg/m3 ceiling Only for locations if the annual average ambient PM2.5 level is 35 μg/m3 or higher. In this case the maximum WELL certification achievable is gold. WELL
Particles <10 μm PM10 50.0 μg/m3 Ceiling monitored in regularly occupied spaces minimum once per year WELL
Particles <10 μm PM10 50.0 μg/m3 ceiling Only for locations if the annual average ambient PM2.5 level is 35 μg/m3 or higher. In this case the maximum WELL certification achievable is gold. WELL
Radon Rd 150.0 Bq/m3 Ceiling One test is conducted per 2,300 m2 [25,000 ft2] of regularly occupied space at or below grade. WELL
Formaldehyde HCHO 27.0 ppb Ceiling monitored in regularly occupied spaces minimum once per year WELL
Benzene C6H6 30.0 μg/m3 Ceiling monitored in regularly occupied spaces minimum once per year WELL
Nitrogen dioxide NO2 21.0 ppb 1 year 40 μg/m3 WHO
Nitrogen dioxide NO2 105.0 ppb 1 hour 200 μg/m3 WHO OAQ
Ozone O3 50.0 ppb 8 hours 100 μg/m3 WHO OAQ
Particles <2.5 μm PM2.5 25.0 μg/m3 24 hours WHO OAQ
Particles <2.5 μm PM2.5 10.0 μg/m3 1 year WHO OAQ
Particles <10 μm PM10 50.0 μg/m3 24 hours WHO OAQ
Particles <10 μm PM10 20.0 μg/m3 1 year WHO OAQ
Sulfur dioxide SO2 20.0 ug/m3 24 hours 20 μg/m3 WHO OAQ
Sulfur dioxide SO2 500.0 ug/m3 10 minutes 500 μg/m3 WHO OAQ
Radiofrequencies RF 50000000.0 μW/m2 Ceiling Occupational, 10-300 GHz (50 W/m2), averaged over a 20 cm2 area ICNIRP
Radiofrequencies RF 10000000.0 μW/m2 Ceiling General public, 10-300 GHz ICNIRP
Radiofrequencies RF 133333333.0 μW/m2 30 minutes Occupational, 100 kHz - 10 GHz (0.4 W/kg whole body SAR) ICNIRP
Radiofrequencies RF 26666666.0 μW/m2 30 minutes General public, 100 kHz - 10 GHz (0.08 W/kg whole body SAR) ICNIRP
Radiofrequencies RF 26666666 μW/m2 Ceiling Uncontrolled environment, whole body mass average, 100 kHz-10 GHz (0.08 W/kg) ICNIRP
DC magnetic fields DC MF 2000000.0 μT Ceiling Limit for head and trunk exposure, occupational ICNIRP
DC magnetic fields DC MF 8000000.0 μT Ceiling Only if in controlled environment, occupational ICNIRP
DC magnetic fields DC MF 400000.0 μT Ceiling Exposure of any body part, general public ICNIRP
AC magnetic fields AC MF 2000000.0 mG Not specified Occupational, up to 1 Hz, unperturbed rms value (2x10^5 μT) ICNIRP
AC magnetic fields AC MF 98765 mG Not specified Occupational, 1-8 Hz, unperturbed rms value (depend on frequency, 2x10^5μT/f^2) ICNIRP
AC magnetic fields AC MF 15152 mG Not specified Occupational, 8-25 Hz, unperturbed rms value (depend on frequency, 2.5x10^4 μT/f) ICNIRP
AC magnetic fields AC MF 592 mG Not specified Occupational, 0.025-0.82 kHz, unperturbed rms value (depend on frequency, 25 μT/f) ICNIRP
AC magnetic fields AC MF 307.0 mG Not specified Occupational, 0.82-65 kHz, unperturbed rms value (30.7 μT) ICNIRP
AC magnetic fields AC MF 4 mG Not specified Occupational, 0.065-10 MHz, unperturbed rms value (depend on frequency, 2.0 μT/f) ICNIRP
AC magnetic fields AC MF 2 mG Not specified Occupational, 10-400 MHz, unperturbed rms value (0.2 μT) ICNIRP
AC magnetic fields AC MF 3 mG Not specified Occupational, 400-2000 MHz, unperturbed rms value (depend on frequency, 0.01 μT f^0.5) ICNIRP
AC magnetic fields AC MF 4.5 mG Not specified Occupational, 2-300 GHz, unperturbed rms value (0.45 μT) ICNIRP
AC electric fields AC EF 20000.0 V/m Not specified Occupational, 1-25 Hz, unperturbed rms value ICNIRP
AC electric fields AC EF 1183 V/m Not specified Occupational (level depends on frequency, 500/f), 0.025-0.82 kHz, unperturbed rms value ICNIRP
AC electric fields AC EF 610.0 V/m Not specified Occupational, 0.82 kHz -1 MHz, unperturbed rms value ICNIRP
AC electric fields AC EF 111 V/m Not specified Occupational (level depends on frequency, 610/f), 0.025-0.82 kHz, unperturbed rms value ICNIRP
AC electric fields AC EF 61.0 V/m Not specified Occupational, 10 - 400 MHz, unperturbed rms value ICNIRP
AC electric fields AC EF 104 V/m Not specified Occupational, 400-2000 MHz, unperturbed rms value ICNIRP
AC electric fields AC EF 137 V/m Not specified Occupational, 2-300 GHz, unperturbed rms value ICNIRP
AC electric fields AC EF 10000 V/m Not specified General public, 1-25 Hz, unperturbed rms value ICNIRP
AC electric fields AC EF 165 V/m Not specified General public (level depend on frequency, 250/f), 0.025-3 kHz, unperturbed rms value ICNIRP
AC electric fields AC EF 87 V/m Not specified General public, 3kHz-1 MHz, unperturbed rms value ICNIRP
AC electric fields AC EF 37 V/m Not specified General public (level depend on frequency, 87/f^0.5), 1-10 MHz, unperturbed rms value ICNIRP
AC electric fields AC EF 28 V/m Not specified General public, 10-400 MHz, unperturbed rms value ICNIRP
AC electric fields AC EF 48 V/m Not specified General public (level depend on frequency, 1.375f^0.5), 400-2000 MHz, unperturbed rms value ICNIRP
AC electric fields AC EF 61 V/m Not specified General public, 2-300 GHz, unperturbed rms value ICNIRP
Carbon dioxide CO2 10000.0 ppm 8 hours INSHT
Carbon dioxide CO2 30000.0 ppm 15 minutes INSHT
Carbon monoxide CO 35.0 ppm 8 hours INSHT
Carbon monoxide CO 200.0 ppm 15 minutes INSHT
Lead Pb 50.0 μg/m3 8 hours INSHT
Nitrogen dioxide NO2 1000.0 ppb 15 minutes INSHT
Ozone O3 100.0 ppb 8 hours INSHT
Ozone O3 300 ppm 15 minutes INSHT
Radon Rd 70.0 Bq/m3 INSHT
Sulfur dioxide SO2 20000.0 ppb 8 hours INSHT
Sulfur dioxide SO2 5.0 ppm 15 minutes INSHT
Formaldehyde HCHO 100.0 ppb Ceiling INSHT
Benzene C6H6 3250 μg/m3 Ceiling INSHT
Total volatile organic compounds TVOC 25000.0 ppb Ceiling 50 mg/m3 INSHT
Toluene C7H8 20000.0 ppb Ceiling INSHT
Room air temperature Ta 17.0 °C Floor sedentary jobs INSHT
Room air temperature Ta 22.0 °C Ceiling sedentary jobs INSHT
Room air temperature Ta 15.0 °C Floor ordinary jobs INSHT
Room air temperature Ta 18.0 °C Ceiling ordinary jobs INSHT
Room air temperature Ta 12.0 °C Floor work that requires physical effort INSHT
Room air temperature Ta 15.0 °C Ceiling work that requires physical effort INSHT
Relative humidity RH 40.0 % Floor INSHT
Relative humidity RH 60.0 % Ceiling INSHT
Air movement v 0.25 m/s normal temperature INSHT
Air movement v 0.75 m/s hot environments INSHT
Carbon dioxide CO2 5000.0 ppm 8 hours TLV-TWA (Threshold Limit Value-Time-Weighted Average) ACGIH
Carbon dioxide CO2 30000.0 ppm 15 minutes TLV-STEL (Threshold Limit Value-Short-Term Exposure Limit) ACGIH
Carbon monoxide CO 25.0 ppm 8 hours TLV-TWA (Threshold Limit Value-Time-Weighted Average) ACGIH
Lead Pb 50.0 μg/m3 8 hours TLV-TWA (Threshold Limit Value-Time-Weighted Average) ACGIH
Nitrogen dioxide NO2 200.0 ppb 8 hours TLV-TWA (Threshold Limit Value-Time-Weighted Average) ACGIH
Ozone O3 50.0 ppb 8 hours TLV-TWA (Threshold Limit Value-Time-Weighted Average) - Heavy work ACGIH
Ozone O3 100.0 ppb 8 hours TLV-TWA (Threshold Limit Value-Time-Weighted Average) - Light work ACGIH
Sulfur dioxide SO2 250.0 ppb 15 minutes TLV-STEL (Threshold Limit Value-Short-Term Exposure Limit) ACGIH
Formaldehyde HCHO 100.0 ppb 8 hours TLV-TWA (Threshold Limit Value-Time-Weighted Average) ACGIH
Formaldehyde HCHO ppb 300.0 15 minutes TLV-STEL (Threshold Limit Value-Short-Term Exposure Limit) ACGIH
Benzene C6H6 1618.0 μg/m3 8 hours TLV-TWA (Threshold Limit Value-Time-Weighted Average) 0.5 ppm ACGIH
Arsenic As 10.0 μg/m3 8 hours TLV-TWA (Threshold Limit Value-Time-Weighted Average) ACGIH
Cadmium Cd 10.0 μg/m3 8 hours TLV-TWA (Threshold Limit Value-Time-Weighted Average) ACGIH
Nickel Ni 100.0 μg/m3 8 hours TLV-TWA (Threshold Limit Value-Time-Weighted Average) Soluble inorganic compounds and nickel subsulfide ACGIH
Nickel Ni 200.0 μg/m3 8 hours TLV-TWA (Threshold Limit Value-Time-Weighted Average) Insoluble inorganic compounds ACGIH
Nickel Ni 1500.0 μg/m3 8 hours TLV-TWA (Threshold Limit Value-Time-Weighted Average) Elemental nickel ACGIH
Hydrogen Sulfide H2S 1.0 ppm 8 hours TLV-TWA (Threshold Limit Value-Time-Weighted Average) ACGIH
Hydrogen Sulfide H2S 5.0 ppm 15 minutes TLV-STEL (Threshold Limit Value-Short-Term Exposure Limit) ACGIH
Ammonia NH3 25000.0 ppb 8 hours TLV-TWA (Threshold Limit Value-Time-Weighted Average) ACGIH
Ammonia NH3 35000.0 ppb 15 minutes TLV-STEL (Threshold Limit Value-Short-Term Exposure Limit) ACGIH
Toluene C7H8 20000.0 ppb 8 hours TLV-TWA (Threshold Limit Value-Time-Weighted Average) ACGIH
Xylene C8H10 100000.0 ppb 8 hours TLV-TWA (Threshold Limit Value-Time-Weighted Average) ACGIH
Xylene C8H10 150000.0 ppb 15 minutes TLV-STEL (Threshold Limit Value-Short-Term Exposure Limit) ACGIH
Acetaldehyde CH3CHO 25.0 ppm 8 hours TLV-TWA (Threshold Limit Value-Time-Weighted Average) ACGIH
Acrolein C3H40 100.0 ppb 8 hours TLV-TWA (Threshold Limit Value-Time-Weighted Average) ACGIH
Carbon dioxide CO2 5000.0 ppm 8 hours TWA (Time-Weighted Average) DFG
Carbon monoxide CO 30.0 ppm 8 hours TWA (Time-Weighted Average) DFG
Nitrogen dioxide NO2 500.0 ppb 8 hours TWA (Time-Weighted Average) DFG
Sulfur dioxide SO2 1000.0 ppb 8 hours TWA (Time-Weighted Average) DFG
Formaldehyde HCHO 300.0 ppb 8 hours TWA (Time-Weighted Average) DFG
Hydrogen Sulfide H2S 5.0 ppm 8 hours TWA (Time-Weighted Average) DFG
Ammonia NH3 20000.0 ppb 8 hours TWA (Time-Weighted Average) DFG
Toluene C7H8 50000.0 ppb 8 hours TWA (Time-Weighted Average) DFG
Xylene C8H10 100000.0 ppb 8 hours TWA (Time-Weighted Average) DFG
Acetaldehyde CH3CHO 50.0 ppm 8 hours TWA (Time-Weighted Average) DFG
Acetaldehyde CH3CHO 100.0 ppm ceiling DFG
Carbon dioxide CO2 5000.0 ppm 8 hours TWA (Time-Weighted Average) NIOSH
Carbon dioxide CO2 30000.0 ppm ceiling NIOSH
Carbon monoxide CO 35.0 ppm 8 hours TWA (Time-Weighted Average) NIOSH
Carbon monoxide CO 200.0 ppm ceiling NIOSH
Lead Pb 50.0 μg/m3 8 hours TWA (Time-Weighted Average) NIOSH
Nitrogen dioxide NO2 1000.0 ppb ceiling NIOSH
Ozone O3 100.0 ppb ceiling NIOSH
Sulfur dioxide SO2 2000.0 ppb 8 hours TWA (Time-Weighted Average) NIOSH
Sulfur dioxide SO2 5000.0 ppb ceiling NIOSH
Formaldehyde HCHO 16.0 ppb 8 hours TWA (Time-Weighted Average) NIOSH
Formaldehyde HCHO 100.0 ppb ceiling NIOSH
Benzene C6H6 323.0 μg/m3 8 hours TWA (Time-Weighted Average) 0.1 ppm NIOSH
Benzo[a]pyrene BaP 0.01 ppt 8 hours TWA (Time-Weighted Average) 0.1 mg/m3 NIOSH
Arsenic As 2.0 μg/m3 ceiling NIOSH
Nickel Ni 15.0 μg/m3 8 hours TWA (Time-Weighted Average) 0.1 mg/m3 NIOSH
Hydrogen Sulfide H2S 10.0 ppm ceiling NIOSH
Ammonia NH3 25000.0 ppb 8 hours TWA (Time-Weighted Average) NIOSH
Ammonia NH3 35000.0 ppb ceiling NIOSH
Toluene C7H8 100000.0 ppb 8 hours TWA (Time-Weighted Average) NIOSH
Toluene C7H8 150000.0 ppb ceiling NIOSH
Xylene C8H10 100000.0 ppb 8 hours TWA (Time-Weighted Average) NIOSH
Xylene C8H10 150000.0 ppb ceiling NIOSH
Acrolein C3H40 100.0 ppb 8 hours TWA (Time-Weighted Average) NIOSH
Acrolein C3H40 300.0 ppb 15 minutes STEL (Short-Term Exposure Limit) NIOSH
Carbon monoxide CO 5.0 ppm 8 hours Maximum desirable level EnvCAN
Carbon monoxide CO 13.0 ppm 1 hour Maximum desirable level EnvCAN
Carbon monoxide CO 13.0 ppm 8 hours Maximum acceptable level EnvCAN
Carbon monoxide CO 31.0 ppm 1 hour Maximum acceptable level EnvCAN
Nitrogen dioxide NO2 30.0 ppb 1 year Maximum desirable level EnvCAN
Nitrogen dioxide NO2 50.0 ppb 1 year Maximum acceptable level EnvCAN
Nitrogen dioxide NO2 210.0 ppb 1 hour Maximum acceptable level EnvCAN
Ozone O3 50.0 ppb 1 hour Maximum desirable level EnvCAN
Ozone O3 80.0 ppb 1 hour Maximum acceptable level EnvCAN
Total suspended particles TSP 60.0 μg/m3 1 year Maximum desirable level EnvCAN
Total suspended particles TSP 70.0 μg/m3 1 year Maximum acceptable level EnvCAN
Total suspended particles TSP 120.0 μg/m3 24 hours Maximum acceptable level EnvCAN
Sulfur dioxide SO2 10.0 ppb 1 year Maximum desirable level EnvCAN
Sulfur dioxide SO2 60.0 ppb 24 hours Maximum desirable level EnvCAN
Sulfur dioxide SO2 170.0 ppb 1 hour Maximum desirable level EnvCAN
Sulfur dioxide SO2 20.0 ppb 1 year Maximum acceptable level EnvCAN
Sulfur dioxide SO2 110.0 ppb 24 hours Maximum acceptable level EnvCAN
Sulfur dioxide SO2 340.0 ppb 1 hour Maximum acceptable level EnvCAN
Carbon monoxide CO 25.0 ppm 1 hour HealthCAN
Carbon monoxide CO 10.0 ppm 24 hours HealthCAN
Nitrogen dioxide NO2 90.0 ppb 1 hour HealthCAN
Nitrogen dioxide NO2 11.0 ppb 24 hours HealthCAN
Ozone O3 20.0 ppb 8 hours HealthCAN
Radon Rd 200.0 Bq/m3 Not specified HealthCAN
Formaldehyde HCHO 100.0 ppb 1 hour HealthCAN
Formaldehyde HCHO 40.0 ppb 8 hours HealthCAN
Toluene C7H8 4000.0 ppb 8 hours HealthCAN
Toluene C7H8 600.0 ppb 24 hours HealthCAN
Xylene C8H10 24.0 ppb Ceiling Indoor Air Reference Level HealthCAN
Acetaldehyde CH3CHO 0.8 ppm 1 hour 795 ppb HealthCAN
Acetaldehyde CH3CHO 0.15 ppm 24 hours 157 ppb HealthCAN
Acrolein C3H40 0.15 ppb Ceiling Indoor Air Reference Level HealthCAN
Radiofrequencies RF 26666666 μW/m2 Ceiling Uncontrolled environment, whole body mass average, 100 kHz-6GHz (0.08 W/kg) HealthCAN
Radiofrequencies RF 533333333 μW/m2 Ceiling Uncontrolled environment, spatially averaged over head, neck and trunck, 100 kHz-6GHz (1.6 W/kg) HealthCAN
Radiofrequencies RF 1333333333 μW/m2 Ceiling Uncontrolled environment, spatially averaged in the limbs, 100 kHz-6GHz (4 W/kg) HealthCAN
Radiofrequencies RF 133333333 μW/m2 Ceiling Controlled environment, whole body mass average, 100 kHz-6GHz (0.4 W/kg) HealthCAN
Radiofrequencies RF 2666666 μW/m2 Ceiling Controlled environment, spatially averaged over head, neck and trunck, 100 kHz-6GHz (8 W/kg) HealthCAN
Radiofrequencies RF 6666666666 μW/m2 Ceiling Controlled environment, spatially averaged in the limbs, 100 kHz-6GHz (20 W/kg) HealthCAN
Radiofrequencies RF 8944000 μW/m2 Ceiling 20-48 MHz, depends on frequency, 8944000/f^0.5, uncontrolled environment HealthCAN
Radiofrequencies RF 1291000.0 μW/m2 Ceiling 48-300 MHz, uncontrolled environment HealthCAN
Radiofrequencies RF 26190 μW/m2 Ceiling 300-6000 MHz, depends on frequency, 26190/f^0.6834, uncontrolled environment HealthCAN
Radiofrequencies RF 666666666 μW/m2 Ceiling Uncontrolled environment, spatially averaged over head, neck trunck, 100 kHz-10 GHz (2 W/kg) ICNIRP
Radiofrequencies RF 1333333333 μW/m2 Ceiling Uncontrolled environment, spatially averaged in the limbs, 100 kHz-10 GHz (4 W/kg) ICNIRP
Radiofrequencies RF 133333333 μW/m2 Ceiling Controlled environment, whole body mass average, 100 kHz-10 GHz (0.4 W/kg) ICNIRP
Radiofrequencies RF 3333333333 μW/m2 Ceiling Controlled environment, spatially averaged over head and trunck, 100 kHz-6GHz (10 W/kg) ICNIRP
Radiofrequencies RF 6666666666 μW/m2 Ceiling Controlled environment, spatially averaged in the limbs, 100 kHz-10 GHz (20 W/kg) ICNIRP
AC electric fields AC EF 12004 V/m Ceiling For controlled environment, 3 kHz-10 MHz (depends on frequency, 2.7 * 10^-4 * f ) HealthCAN
AC electric fields AC EF 6752 V/m Ceiling For uncontrolled environment, 3 kHz-10 MHz (depends on frequency, 1.35 * 10^-4 * f ) HealthCAN
Carbon dioxide CO2 800.0 ppm Ceiling For class A++ (great), kindergartens, schools and offices DK
Carbon dioxide CO2 900.0 ppm Ceiling For class A+ (good), offices DK
Carbon dioxide CO2 1000.0 ppm Ceiling For class A+ (good) for kindergartens and schools and class A (satisfactory) for offices DK
Carbon dioxide CO2 1200.0 ppm Ceiling For class A (satisfactory), kindergartens and schools DK
Carbon dioxide CO2 1500.0 ppm Ceiling For class B (below the requirements), kindergartens, schools and offices DK
Carbon dioxide CO2 1500.0 ppm Floor For class E (poor), kindergartens, schools and offices DK
Radon Rd 100.0 Bq/m3 Ceiling For class A (satisfactory), A+ (good) and A++ (great), for residences, kindergartens, schools and offices DK
Radon Rd 200.0 Bq/m3 Ceiling For class B (below the requirements), for residences, kindergartens, schools and offices DK
Radon Rd 200.0 Bq/m3 Floor For class E (poor), for residences, kindergartens, schools and offices DK
Formaldehyde HCHO 80.0 ppb Ceiling For class A (satisfactory), A+(good) and A++ (great), 0.1 mg/m3, for residences, kindergartens, schools and offices DK
Formaldehyde HCHO 160.0 ppb Ceiling For class B (below the requirements) 0.2 mg/m3, for residences, kindergartens, schools and offices DK
Formaldehyde HCHO 160.0 ppb Floor For class E (poor) 0.2 mg/m3, for residences, kindergartens, schools and offices DK
None None 2000000 None None 10-20 MHz, uncontrolled environment None
Carbon dioxide CO2 WHO IAQ
Carbon dioxide CO2 WHO IAQ
Carbon dioxide CO2 WHO IAQ
Carbon monoxide CO 6.0 ppm 24 hours 7 mg/m3 WHO IAQ
Carbon monoxide CO 8.6 ppm 8 hours 10 mg/m3 WHO IAQ
Carbon monoxide CO 30.0 ppm 1 hour 35 mg/m3 WHO IAQ
Carbon monoxide CO 86.0 ppm 15 minutes 100 mg/m3 WHO IAQ
Carbon monoxide CO WHO IAQ
Lead Pb WHO IAQ
Lead Pb WHO IAQ
Lead Pb WHO IAQ
Nitrogen dioxide NO2 21.0 ppb 1 year 40 μg/m3 WHO IAQ
Nitrogen dioxide NO2 105.0 ppb 1 hour 200 μg/m3 WHO IAQ
Nitrogen dioxide NO2 WHO IAQ
Nitrogen dioxide NO2 WHO IAQ
Ozone O3 WHO IAQ
Ozone O3 WHO IAQ
Ozone O3 WHO IAQ
Particles <2.5 μm PM2.5 WHO IAQ
Particles <2.5 μm PM2.5 WHO IAQ
Particles <2.5 μm PM2.5 WHO IAQ
Particles <10 μm PM10 WHO IAQ
Particles <10 μm PM10 WHO IAQ
Particles <10 μm PM10 WHO IAQ
Total suspended particles TSP WHO IAQ
Total suspended particles TSP WHO IAQ
Total suspended particles TSP WHO IAQ
Radon Rd No guidelines provided, only radon concentrations associated with excess lifetime risk WHO IAQ
Radon Rd WHO IAQ
Radon Rd WHO IAQ
Sulfur dioxide SO2 WHO IAQ
Sulfur dioxide SO2 WHO IAQ
Sulfur dioxide SO2 WHO IAQ
Formaldehyde HCHO 80.0 ppb 30 minutes 0.1 mg/m3 WHO IAQ
Formaldehyde HCHO WHO IAQ
Formaldehyde HCHO WHO IAQ
Benzene C6H6 No safe level of exposure can be recommended WHO IAQ
Benzene C6H6 WHO IAQ
Benzene C6H6 WHO IAQ
Total volatile organic compounds TVOC WHO IAQ
Total volatile organic compounds TVOC WHO IAQ
Total volatile organic compounds TVOC WHO IAQ
Benzo[a]pyrene BaP No threshold can be determined and all indoor exposures are considered relevant to health WHO IAQ
Benzo[a]pyrene BaP WHO IAQ
Benzo[a]pyrene BaP WHO IAQ
Arsenic As WHO IAQ
Arsenic As WHO IAQ
Arsenic As WHO IAQ
Cadmium Cd WHO IAQ
Cadmium Cd WHO IAQ
Cadmium Cd WHO IAQ
Nickel Ni WHO IAQ
Nickel Ni WHO IAQ
Nickel Ni WHO IAQ
Nitrogen monoxide NO WHO IAQ
Nitrogen monoxide NO WHO IAQ
Nitrogen monoxide NO WHO IAQ
Total bacterial counts TBC WHO IAQ
Total bacterial counts TBC WHO IAQ
Total bacterial counts TBC WHO IAQ
Total fungal counts TFC WHO IAQ
Total fungal counts TFC WHO IAQ
Total fungal counts TFC WHO IAQ
Hydrogen Sulfide H2S WHO IAQ
Hydrogen Sulfide H2S WHO IAQ
Hydrogen Sulfide H2S WHO IAQ
Ammonia NH3 WHO IAQ
Ammonia NH3 WHO IAQ
Ammonia NH3 WHO IAQ
Toluene C7H8 WHO IAQ
Toluene C7H8 WHO IAQ
Toluene C7H8 WHO IAQ
Xylene C8H10 WHO IAQ
Xylene C8H10 WHO IAQ
Xylene C8H10 WHO IAQ
Room air temperature Ta WHO IAQ
Room air temperature Ta WHO IAQ
Room air temperature Ta WHO IAQ
Operative temperature Top WHO IAQ
Operative temperature Top WHO IAQ
Operative temperature Top WHO IAQ
Mean radiant temperature Tmr WHO IAQ
Mean radiant temperature Tmr WHO IAQ
Mean radiant temperature Tmr WHO IAQ
Relative humidity RH WHO IAQ
Relative humidity RH WHO IAQ
Relative humidity RH WHO IAQ
Air movement v WHO IAQ
Air movement v WHO IAQ
Air movement v WHO IAQ
Light I WHO IAQ
Light I WHO IAQ
Light I WHO IAQ
Sound Lp WHO IAQ
Sound Lp WHO IAQ
Sound Lp WHO IAQ
Radiofrequencies RF WHO IAQ
Radiofrequencies RF WHO IAQ
Radiofrequencies RF WHO IAQ
DC magnetic fields DC MF WHO IAQ
DC magnetic fields DC MF WHO IAQ
DC magnetic fields DC MF WHO IAQ
AC magnetic fields AC MF WHO IAQ
AC magnetic fields AC MF WHO IAQ
AC magnetic fields AC MF WHO IAQ
DC electric fields DC EF WHO IAQ
DC electric fields DC EF WHO IAQ
DC electric fields DC EF WHO IAQ
AC electric fields AC EF WHO IAQ
AC electric fields AC EF WHO IAQ
AC electric fields AC EF WHO IAQ


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Malaysia - DOSH
Singapore - IEE
Spain - INSHT
UK - HSE
US - EPA

Acetaldehyde (3)
Acrolein (3)
Ammonia (4)
Arsenic (2)
Benzene (12)
Benzo[a]pyrene (2)
Cadmium (2)
Carbon dioxide (19)
Carbon monoxide (21)
Formaldehyde (19)
Hydrogen Sulfide (3)
Lead (11)
Nickel (2)
Nitrogen dioxide (20)
Nitrogen monoxide (0)
Ozone (19)
Particles <10 μm (9)
Particles <2.5 μm (9)
Radon (11)
Sulfur dioxide (15)
Toluene (6)
Total bacterial counts (4)
Total fungal counts (2)
Total suspended particles (5)
Total volatile organic compounds (7)
Xylene (5)

Air velocity (5)
Light (1)
Mean radiant temperature (0)
Operative temperature (2)
Relative humidity (7)
Room air temperature (5)
Sound (1)

AC electric fields (5)
AC magnetic fields (4)
DC electric fields (1)
DC magnetic fields (2)
Radiofrequencies (7)

10 to 30 minutes 1 Hour 8 Hours 24 Hours 3 Months 1 Year Ceiling Floor

Although efforts have been dedicated to ensure the accuracy of the data reviewed here, the authors cannot be held accountable for eventual mistakes. Users of this site are encouraged to always consult the original sources. Errors can be signaled by contacting dib@iti.sdu.dk.