NIOSH approved for protection against certain organic vapors, acid gases, ammonia, methylamine and formaldehyde Swept-back design allows an enhanced field of view and comfort Bayonet compatibility allows use with many 3M™ half and full facepieces and certain 3M™ Scott™ full facepieces Wide range of applications reduces inventory needs Simple installation and usage requirements reduces training requirements Wide range of applications reduces inventory needs For workplace/occupational use only Package contents: 1 case contains 30 pairs of cartridges (60 each)