Filtering efficiency ranging 80 percent when tested against 0.3-micron sodium chloride particle Can be folded when not in use, slipped easily into the pocket. 3M 9000ING foldable dust or mist particulate respirator, disposable, foldable, twin strap, nose clip. The 3M 9000ING is composed of three layers of filters. The outermost layer filters out the largest dust particles. The innermost layer preserves the respirator's shape. The middle layer is composed of electrostatic filter media. It has the ability of these respirators to filter above 90 percent of 0.3-micron particulate dusts. (Scientific research has proven that for all dust particles sizes, 0.3 micron dust are the most difficult to filter effectively). Cup shape design with aluminum nose clip, neoprene elastic band. FEATURES Filtering efficiency ranging 80 percent when tested against 0.3-micron sodium chloride particle Can be folded when not in use, slipped easily into the pocket. P1 class of filtering efficiency, CLI tested. Specification Application: Personal protection against dust. Make: 3M India Size: Universal. Packing: Poly bag (for orders less than 50 pieces), carton for bulk packing contains 50 pieces per pack. Colour: Gray. Material: Non woven fabric with neoperene strap and aluminum nose clip. Use For: Mechanically generated dusts, mists from processing minerals including coal, iron ore, silica, cotton, flour, wood dusts, masonry dusts, metal particles and other substances in concentration upto ten times the occupational exposure limit. PRODUCT SPECIFICATION Height: 11.98 cm Length: 11.98 cm Width: 5.01cm Weight: 9g Respirator Type: P1