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Ava Powell——Studied at Harvard University, Lives in Cambridge, MA
Previously, the ACGIH recommendation for an eight-hour time weighted average (TWA) exposure limit was a concentration of 10 parts per million and the 15-minute short-term exposure limit (STEL) was 15 ppm. The new recommendations for airborne H2S exposure are a TWA of 1 ppm and an STEL of 5 ppm.Sep 1, 2011read more >>+119962023-06-15 00:30:11
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