Locations, Indoor Air and Air in Limited Spaces
China National Accreditation Service for Conformity Assessment
Approval certificate attachment
(Registration number: CNAS L7034)
Approved range of testing capabilities
| serial number | Detection object | Project parameters | Test standard (method) | illustrate | |
| serial number | name | ||||
| 1 | Public place air, workplace air and indoor air | 1 | Room temperature |
Public places hygiene inspection method part 1: physical factor 3.2 digital display thermometer method GB/T 18204.1-2013 |
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| 2 | Relative humidity |
Hygiene inspection methods for public places Part 1: Physical factors 4.3 Resistance-capacitance method GB/T 18204.1-2013 |
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| 3 | carbon monoxide (CO) |
Appendix D.3 Electrochemical Method of Indoor Ambient Air Quality Monitoring Technical Specification HJ/T 167-2004 |
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| 4 | carbon dioxide (CO2) |
Public places hygiene inspection methods part 2: chemical pollutants 4.1 non-dispersive infrared analysis method GB/T 18204.2-2014 |
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| 5 | Indoor wind speed |
Public place hygiene inspection method part 1: physical factor 5 electric anemometer method GB/T 18204.1-2013 |
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| 6 | Respirable Particulate Matter (PM 10 ) |
Public places hygiene inspection methods part 2: chemical pollutants 5.2 light scattering method GB/T 18204.2-2014 |
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| 7 | Fine Particulate Matter (PM2.5) |
Public places hygiene inspection methods part 2: chemical pollutants 6 light scattering method GB/T 18204.2-2014 |
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| 8 | radon |
Indoor ambient air quality monitoring technical specification Appendix N Determination method of radon in indoor air HJ/T 167-2004 |
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| 9 | ammonia |
Hygiene inspection methods for public places Part 2: Chemical pollutants 8.1 Indophenol blue spectrophotometry GB/T 18204.2-2014 |
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| 10 | formaldehyde | Hygienic inspection methods for public places-Part 2: Chemical pollutants 7.2 Phenol reagent spectrophotometry GB/T 18204.2-2014 | — | ||