Gas Mask Canister, NIOSH Rating Ammonia (AM), Chlorine (CL), Chlorine Dioxide (CD), Chloroacetophenone (CN), Chlorobenzylidene Malononitrile (CS), Formaldehyde (FM), , Hydrogen Chloride (HC), Hydrogen Fluoride (HF), Methylamine (MA), Organic Vapor (OV), Phosphine (PH), Sulfur Dioxide (SD), Color Code Magenta, Olive, Compatible with Brand and Series M120 Series, Scott Safety AV, Respirator Connection Type Threaded