6099 Ammonia, Gas, Particulates, Vapour Filter 7000 Series Full Face Mask. The 3M 6000 series 6096 A2B2E2K2hqP3 R + Formaldehyde Gas and Vapour Filters are designed specifically for organic vapours, inorganic and acid gases, Ammonia, Mercury Particulates and Formaldehyde. These gas and vapour filters employ a counterbalanced, streamlined design to minimise the feeling of weight and therefore improve comfort.