3m respirator cartridge 6006,1 pair,helps protect against organic vapors, acid gases, ammonia,methylamine or formaldehyde niosh approved against certain organic vapors, acid gases,ammonia, methylamine or formaldehyde use with 3m half and full face pieces 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 swept back design allows an enhanced field of view and increased comfort variety of uses:when properly fitted, use in a variety of applications including assembly, batch-charging,chemical clean-up,chemical transfer, cleaning,hazardous waste handling,painting, pouring molten metal easy twist on and off: bayonet connection twist on and off easily for quick assembly and disassembly with many 3m half and full facepiece designs