Indoor air quality standard
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- Time of issue:2018-10-11 13:50
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(Summary description)There are two indoor air quality standards in China, one for the Ministry of Health and one for the Ministry of Construction. They are: GB/T18883-2002 GB50325-2001
Indoor air quality standard
(Summary description)There are two indoor air quality standards in China, one for the Ministry of Health and one for the Ministry of Construction.
They are: GB/T18883-2002 GB50325-2001
- Categories:Company news
- Author:
- Origin:
- Time of issue:2018-10-11 13:50
- Views:
National Standard for Indoor Environment 《GB50325-2001》
| Contaminant name | One type of construction | Second type construction project | Standard |
| formaldehyde | ≤ 0.08mg/m3 | ≤ 0.12mg/m∧3 | GB50325-2001 |
| benzene | ≤ 0.09mg/m3 | ≤ 0.09mg/m∧3 | GB50325-2001 |
| ammonia | ≤ 0.20mg/m3 | ≤ 0.50mg/m∧3 | GB50325-2001 |
| radon | ≤ 200Bq/m3 | ≤ 400Bq/m∧3 | GB50325-2001 |
| TVOC | ≤ 0.5mg/m3 | ≤ 0.6mg/m∧3 | GB50325-2001 |
Note: One type of building: residential, hospital, elderly apartment, kindergarten, school classroom, etc.
Class II buildings: office buildings, businesses, hotels, cultural and entertainment venues, bookstores, exhibition halls, libraries, gymnasiums, public transportation, restaurants, barbershops, etc.
National standard for indoor environmentGB/T18883-2002
| Serial number | parameter | unit | standard | Remarks: |
| 1 | formaldehyde | mg/m∧3 | 0.10 | 1 hour average |
| 2 | ammonia | mg/m∧3 | 0.20 | 1 hour average |
| 3 | benzene | mg/m∧3 | 0.11 | 1 hour average |
| 4 | radon | Bq/m∧3 | 400 | Annual average (action level*) |
| 5 | Total Volatile Organic Compounds TVOC | mg/m∧3 | 0.60 | 8-hour mean |
| Remarks: *Action level means recommending action to reduce radon concentration. |
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