The 3M Half Mask Respirator is a maintenance-free respirator for use with weedkillers or pesticides, cleaning with chemicals or using solvent based paints. With no maintenance required it is ready to use when needed. Use until damaged, particulate filters clog or gas filters become saturated. With enhanced breathability and reduced resistance provided by twin inhalation valves and large bonded carbon filters. The respirator offers ABEK1 protection against organic and inorganic gases and vapours, acid gases, ammonia and its derivatives. P3 protection against high level fine dusts and oil or water based mists.