3M 3M60926 P100 particulate filter is NIOSH approved against certain organic vapors, acid gases, ammonia, methylamine or formaldehyde and particulates. It can be used in a variety of applications including petrochemical, laboratories, pharmaceutical and chemical manufacturing. When properly fitted, the cartridge helps provide respiratory protection from certain organic vapors, chlorine, hydrogen chloride, sulfur dioxide, or hydrogen sulfide or hydrogen fluoride and particulates at concentrations up to 10 times the Permissible Exposure Limit (PEL) with half face pieces or 50 times PEL with full face pieces. Full face pieces must be quantitatively fit tested to claim assigned protection factor above 10 in negative pressure mode. Do not use in environments that are immediately dangerous to life or health (IDLH). OSHA requires that gas-proof goggles be worn with half face piece respirators when used against formaldehyde. 2 per dispenser.