3M Particulate Respirator 8293, P100. Well suited for those who want NIOSHs highest rated filtration efficiency in a maintenance free respirator. Workplace applications includes OSHA substance specific particle exposure in concentrations up to 10x the OSHA PEL (Lead, Cadmium, Arsenic, MDA, excluding asbestos). This respirator features the 3M Cool Flow Exhalation Valve, comfortable foam faceseal and adjustable straps. Respirators are individually packaged. 20 per case.