10 Paris = 20 Filters. Gas, Vapour & Particulate Filters. 3MT 6000/6500QL/7500 Series Half Face Respirators. 3MT 6000/7000 Series Full Face Respirators. Gas & Vapour Protection Type. Relief from nuisance level acid gas. Relief from organic vapours with vapour pressure. Made from 3M high-performance filter media for effective filtration efficiency. For protection against welding fume, ozone, polishing and grinding particles. Also for spraying pesticides or herbicides with vapour pressure. Will also protect against toxic particles such as mould remediation. With a 3M 6000/7500 Series Half Face Respirator: for particles, for airborne concentrations up to 10 times the Workplace Exposure Standard (WES). With a 3M 6000/7800 Series Full Face Respirator: for particles, for airborne concentrations up to 100 x WES. Organic compounds with low vapour pressures. Ozone up to 10 x WES. Offers relief from acid gases and organic vapours at levels below the WES.