Occupational Exposure Limits in China
An occupational exposure limit is an upper limit on the acceptable concentration of a hazardous substance in workplace air for a particular material or class of materials.
In China, Occupational Exposure Limits(OELs) for hazardous chemicals is set by GBZ 2.1-2007 - Occupational exposure limits for hazardous agents in the workplace. The standard was revised by the Ministry of Health in 2007 and implemented from 1 Nov 2007.
There are three types of OELs for hazardous chemicals in China:
- Maximum allowable concentration (MAC); other countries might call it the ceiling value.
- Permissble concentration-time weighed average(PC-TWA): the maximum average concentration of a chemical in air for a normal 8-hour working day and 40-hour week;
- Permissble concentration-short term exposure limit(PC-STEL): the maximum average concentration to which workers can be exposed for a short period (usually 15 minutes);
The standard has set occupational exposure limits for 339 hazardous chemicals, 47 kinds of dust and 2 types of bacteria. The standard methods of monitoring the concentration of hazardous chemicals in workplace are defined in national standards GBZ 159-2004 and GBZ/T 160-2004.
If you would like to find out what exposure limits are for your chemicals or would like to get a copy of above standards, please contact us.
About Us
Initially set up by China Inspection and Quarantine(CIQ) Bureau in 2007 to provide REACH compliance services to Chinese chemical industry, CIRS has grown to be a leading provider of comprehensive chemical compliance services for companies doing businesses in/with China.
Our services cover new substance notification, registration of the import and export of toxic chemicals, registration of hazardous chemicals, classification and labeling in according to China GHS, Chinese SDS, risk assessment of industrial chemicals, food additives and cosmetic ingredients. We provide one-stop solutions to your regulatory issues in China.We also deliver the most up-to-date regulatory information about chemical control laws in China.
- Mr. Eric Xiong, China Office
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Tel: +86-571 8720 6555 | Fax: +86-571 8720 6533
Email: eric.xiong@cirs-reach.com
