Section R. 325.2405 - Definitions pertaining to respiratorsRule 5. As used in these rules:
(a) "Atmosphere immediately dangerous to life or health" means a nonrespirable atmosphere.(b) "Canister" means a container filled with air-purifying media to remove gases and vapors from air drawn through the container. The canister may also contain an aerosol filter to remove solid or liquid particulate matter.(c) "Cartridge" means a canister having reduced air-purifying capacity.(d) "Facepiece" means that portion of a respirator that is designed to make a gastight or dusttight fit with the face and includes the headbands, exhalation valves, and connections for an air-purifying device or respirable-gas source. A half-mask facepiece covers the wearer's nose and mouth. A full-mask facepiece covers the wearer's nose, mouth, and eyes.(e) "Filter" means a media used in a respirator to remove solid or liquid particulate matter from air drawn through the respirator.(f) "Respiratory protective equipment" means a device or system designed to protect the wearer from inhalation of unhealthful atmospheres.(g) "Respirator" means a type of respiratory protective equipment.Mich. Admin. Code R. 325.2405