The 3M™ Filter Cartridge reduces the amount of particles that may be present in the compressed air system, including water and oil mist. The treated carbon in the filter material helps to lower nuisance level odours.Delve into 3M Products and experience the wide variety of products and replacement parts offered with powered air purifying respirators (PAPR). In addition to powered systems, 3M also offers supplied air respirators (SAR) using air from an air tank or a different external source.