3M Organic Vapor Cartridge / Filter 60921 is NIOSH approved against certain organic vapors and particulates. Use with 3M™ Half face respirators and Full Facepiece Respirators 6000, 7000 and FF-400 Series with bayonet filter holders. When properly fitted, helps provide respiratory protection from certain organic vapors as well as non-oil and oil particulates at concentrations up to 10 times the Permissible Exposure Limit (PEL) with3M half facepiece respirators or 50 times PEL with 3M full facepiece respirators. 3M Full facepiece respirators must be quantitatively fit tested to claim assigned protection factor above 10 in negative pressure mode. Not for use in environments that are immediately dangerous to life or health (IDLH).