3M  Low-Maintenance Cartridge is designed to render respiratory protection from ammonia and methylamine 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 agriculture, chemical manufacturing, laboratories and the food industry. Cartridge is provided with a swept-back design for increased field of view and balance.