3M 6003 Organic Vapor/Acid Gas Cartridge Sold by the pair. 3M 6003 Filters help provide respiratory protection against certain organic vapors or acid gases. Use with 3M™ Half and Full Facepieces 6000, 7000 and FF-400 Series with bayonet filter holders. When properly used with an approved 3M respirator properly fitted. For use in concentrations up to 10 times the Permissible Exposure Limit (PEL) with3M half facepiece and3M full facepiece respirators when qualitatively fit-tested, or up to 50 times PEL with3M full facepiece respirators when quantitatively fit-tested. Not for use in environments that are immediately dangerous to life or health (IDLH). Review full user instructions for details on proper respirator use and NIOSH approvals.