Scientifically designed for non-poisonous fumes, mineral dust such as limestone, slate. Iron, sulphur, spray-painting etc. With replicable filters. Dust x mist respirator is used for protection against toxic dust and mist having permissible exposure level [pel]. Not less than 0.05 mg/m3 of air or 2 million partcles/ft.3.. [pel are published by american govt. Under [fr 29 part 1910.1000] not to be used when concentration of containment is more than ten [10] times pel.
