The 3M filter respirator promask is a high-efficiency filter that protects gases & vapours from organic compounds with a boiling point above 65°C. It also protects inorganic gases & vapours, eg. chlorine, hydrogen sulphide, hydrogen cyanide, acid gases & vapours, eg. sulphur dioxide, ammonia & organic ammonia derivatives and solid & liquid, radioactive & toxic particles & micro-organisms eg, bacteria, viruses & enzymes.