Chemical-biological Mas Canister

An air filtering device designed to be inserted in the facepiece of a mask, chemical-biological. It is designed to remove from the air passing through it toxic and/or irritating chemical vapors, gases and particulate contaminants (dust, fumes, mists, fogs, and smokes) including biological organisms likely to to be used in warfare. It may filter industrial dusts, fumes, mists, fogs and smoke, but is not designed to remove industrial type gases or vapors. See also canister, gas mask.