Particulate filter has been developed with your respiratory needs in mind. Specially designed carbon layers offer nuisance level relief from organic vapors that are below the PEL. Approved 99.97 percent effective against certain oil-based and nonoil-based particulate contaminants. Ideal for welding, metal pouring, torch cutting, abatement or as a prefilter for certain chemical exposures. Use with 3M Facepieces 6000 Series or 3M Facepieces 7000 Series with bayonet filter holders.