3M 6002 Acid Gas Cartridges are NIOSH approved against certain acid gases. 3M 6002 Filters for use with 3M™ Half respirators and 3M Full Facepiece Respirators 6000, 7000 and FF-400 Series with bayonet filter holders. When properly fitted, helps provide respiratory protection from chlorine, hydrogen chloride, sulfur dioxide, or chlorine dioxide, or hydrogen sulfide at concentrations up to 10 times the Permissible Exposure Limit (PEL) with 3M half facepieces or 50 times PEL with 3M full facepieces. 3M Full facepieces 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).