PEL/TWA at Chemical Glossary
What is it? Permissible exposure limit or Time Weighted Average. This is the cumulative average concentration over an 8 hr/day, 40 hr/wk to which a worker can be safely exposed. (OSHA Federal Standard)Chemistry Definition Added By: Samuel
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Chemistry Term PEL/TWA is Permissible exposure limit or Time Weighted Average. This is the cumulative average concentration over an 8 hr/day, 40 hr/wk to which a worker can be safely exposed. (OSHA Federal Standard)
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