Recommended Exposure Limit (REL) 2


Recommended Exposure Limit (REL) 2 : An 8_ or 10_hour time_weighted average (TWA) or ceiling (C) exposure concentration recommended by NIOSH that is based on an evaluation of the health effects data. NIOSH Definition [OSHA, 2000: On-line OSHA/NIOSH Glossary of Respiratory Protective Terms]
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