TLV TWA definitions

tlv-twa

Threshold Limit Value for the Time Weighted Average 8 hour day. (ACGIH Standard)
Found on http://www.chemicalglossary.net/definition/1596-TLV/TWA

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TLV-TWA

Threshold limit value (ACGIH) - time weighted average
Found on https://sis.nlm.nih.gov/enviro/iupacglossary/annex1.html

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