PRICED PER EACH, SOLD IN QTYS 2/Pk. May be used for respiratory protection from certain organic vapors, chlorine, hydrogen chloride, sulfur dioxide, chlorine dioxide, hydrogen sulfide, ammonia, methylamine, formaldehyde, or hydrogen fluoride, and non-oil and oil particulate concentrations up to 10 times the Permissible Exposure Limit (PEL) with half facepieces or 50 times PEL with quantitatively fit tested full facepiece masks. This cartridge/filter is not for use in environments that are immediately dangerous to life or health (IDLH). Recommended applications for the cartridge/filter include petrochemical and chemical processing. Inventory needs and training requirements for safety equipment are reduced because this respirator cartridge selection works for many different applications. This cartridge/filter is commonly used in the following industries: utilities, pharmaceuticals, mining, and primary metals. NIOSH approved against certain organic vapors, acid gases and particulates. Use with 3M™ Half and Full Facepieces 6000, 7000 and FF-400 Series with a bayonet-style filter/cartridge connection or 3M™ Scott™ AV-3000 HT and AV-3000 SureSeal facepieces with 3M™ Scott™ AV-632 Bayonet Adapter.