... effective against particulate aerosols free of oils. Particulate Respirator Features: 1) Disposable2) Filtration 95% effective against particulate aerosols free ... carbonate,china clay, cement, cellulose, sulfur, cotton, flour, carbon, ferrousmetals, hard wood, coal, iron ore, aluminum, ... filter: loaded with high performance acid-resistantactive carbon pre-filter against nuisance organic vapor and ...