A - Organic gases and vapours, such as solvents, with boiling points above +65°C.
B - Inorganic gases and vapours, such as chlorine, hydrogen sulphide, hydrogen cyanide.
E - Acid gases and vapours, such as sulphur dioxide, hydrogen fluoride.
K - Ammonia and certain amines, such as ethylene diamine
Hg - Mercury vapour. NOTE: max use 50 hours.
P - All types of wet and dry particles, such as dust, mist, smoke, fume, bacteria, viruses, mould, fibre