NIOSH approved. When properly fitted, cartridge helps provide respiratory protection from certain organic vapours. Not suitable for use in environments that are Immediately Dangerous to Life or Health (IDLH). 3M™ Organic Vapour Cartridge 6001 is NIOSH approved against certain organic vapours. Use with 3M™ Half and Full Facepieces 6000 Series and 3M™ Half and Full Facepieces 7000 Series with bayonet style cartridge holders.