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Why do the Chemical Substance TLVs change periodically?

April 26, 2017chemical periodically substance TLVs

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Why do the Chemical Substance TLVs change periodically?

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10 Posted

TLVs for chemical substances may be changed by ACGIH as a result of the evaluation of newly available data or re-evaluation of existing data. Justification for these changes is presented in the TLV Documentation for the chemical in question.