Organic Vapor\/Acid Gas Cartridge\/Filter helps provide NIOSH-approved respiratory protection against certain organic vapors, acid gases and particulates when used properly with 3M Half and Full Facepieces 6000, 7000 and FF-400 Series with bayonet filter holders. Swept-back design allows enhanced field of view and balance. Cartridge is suited for a variety of applications, including petrochemical and chemical processing, utilities, pharmaceuticals, mining and primary metals. Cartridge is not designed for use in environments that are immediately dangerous to life or health.