NIOSH approved against certain organic vapors, acid gases, ammonia, methylamine or formaldehyde. Use with 3Ma,, Half and Full Facepieces 6000, 7000 and FF-400 Series with bayonet filter holders. 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 facepiece designs. Wide range of applications reduces inventory needs. Simple installation and usage requirements reduces training requirements.