3M™ 3MR6002 Acid Gas Respiratory Protective Cartridge. 3M™ Low-Maintenance Cartridge is designed to render respiratory protection from chlorine, hydrogen chloride, sulfur dioxide, chlorine dioxide or hydrogen sulfide at concentrations up to 10 times and 50 times the permissible exposure limit with half Facepieces and full Facepieces respectively. This cartridge is compatible with 6000 and 7000 series air purifying respirator comprising bayonet style cartridge holders. Cartridge measuring 3.4" X 4.2" is used in a variety of applications such as pulp and paper, chemical manufacturing, glass etching and laboratories. Cartridge is provided with a swept-back design for increased field of view and balance.