Moldex ABEK1 P3 R EasyLock ABEK Gas and P3 Particulate Filter 9430. P3 filter Protects against radioactive particles, highly toxic metals, hard wood as well as airborne biological substances and enzymes based on water and oil. ABEK1 Gas filter is a multi purpose filter that protects against Organic Gases and vapours with boiling point > 65 C, Inorganic gases and vapours, acid gases and ammonia. ---Bayonet connector for ease of fitment ---Particulate filters can either be connected with the gas cartridges or directly with the mask body.