- Organic Vapors and Acid Gases OV/AG (chlorine, hydrogen chloride,
sulfur dioxide, hydrogen fluoride and chlorine dioxide)
- OSHA's Standard for Respiratory Protection, §29 CFR 1910.134, requires Employers to implement a change schedule for all vapor and gas cartridges when there isn't an end-of-service life indicator on the cartridge
- This schedule must be site specific and take into consideration worksite humidity, worker breathing rate as well as contaminant concentrations
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