3M's 6000 Series is NIOSH approved for negative-pressure air purifying and positive-pressure dual airline applications. This half facepiece respirator may be used with 3M Cartridge 6000 Series, 3M Filters 2000, 2200, 7000 or 5000 Series, or 3M Dual Airline Systems against a variety of gases, vapors, and particulate hazards according to NIOSH approvals. Breathing hazardous particles, gases and vapors can be harmful to your health. The 3M Half Facepiece Reusable Respirator 6000 Series helps reduce exposure to many contaminants.