Workplace applications include OSHA substance specific particle exposure in concentrations up to 10 x the OSHA PEL (Lead, Cadmium, Arsenic, MDA). Features the 3M Cool Flow Exhalation Valve, comfortable foam faceseal and adjustable straps. Respirators are individually packaged. Do not use for asbestos exposures. **PE**R-1 Warning NIOSHs highest rated filtration efficiency in a maintenance free respirator. Workplace applications includes OSHA substance specific particle exposures in concentrations up to 10x the OSHA PEL. Respirator offers protection against solid and liquid particles including those containing oil. It features the Cool Flow exhalation valve, comfortable face seal and adjustable straps.