Occupational exposure limit (AGW)
Also: AGW, Arbeitsplatzgrenzwert, OEL, MAK value
Definition
The occupational exposure limit is the concentration of a substance in the workplace air at which, in general, no acute or chronic damage to health is to be expected – based on eight hours a day and 40 hours a week. In Germany, the values are listed in TRGS 900.
The AGW (Arbeitsplatzgrenzwert) replaced the former MAK value as the legally binding limit. If it is complied with, the protective measures against inhalation are considered sufficient; whether it is complied with is shown by measurements or recognised calculation methods. For carcinogenic substances, risk-based acceptable and tolerable concentrations apply instead of the AGW (TRGS 910).
The AGW is listed in section 8 of the safety data sheet and is a key element of the risk assessment for activities involving hazardous substances.
Legal basis
- Section 2 (8) of the Hazardous Substances Ordinance
- TRGS 900, TRGS 910, TRGS 402
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Related terms
This glossary entry gives a general overview of German occupational safety law and does not replace legal advice. The regulations in force and the rules of the statutory accident insurance institutions are authoritative.




