The 3M™ Particulate Filter 2091 is NIOSH approved for environments containing certain oil and non-oil based particles.3M Particulate Filter 2091, P100 helps provide respiratory protection against exposure to lead, asbestos, cadmium, arsenic, and MDA. The filter is effective for concentrations up to 10 times the Permissible Exposure Limit (PEL) with half facepieces, or 50 times PEL with quantitatively fit tested full facepieces. This filter helps protect against a wide range of oil and non-oil based particulate contaminants. 3Ms Advanced Electret Media (AEM) provides a comfortable lightweight, easy-breathing combination. The 3M Particulate Filter 2091 is commonly used for welding, brazing, torch cutting, metal pouring and soldering. The filter is both flame and water resistant. Industries where this filter is commonly used include agriculture, construction, general manufacturing, pharmaceuticals and primary metals.