Respirtory Protection Classes
A = Organic Gases & Vapours like Solvents, Turpentine & Thinners
B = Acid Gases & Chlorine
E = Inorganic Gases like Sulpher Dioxide
K = Ammonia Gases
P1 = Mechanically made particulates (Dust, Mists, Sprays)
P2 = Thermally made particulates (Hot Metal Fumes)
P2* = Thermally made particulates (Hot Metal Fumes) in Half or Full Face Masks
P3 = Highly Toxic particulates
P3* = Highly Toxic particulates - in Full Face Masks only