Household multi-purpose. Cartridges breathes 15% easier (Breathe easier is defined as initial pressure drop of 3M 60921 and 60923 cartridges compared to leading competitive models). Use for: Relief certain non-harmful particles and annoying odors. For DIY/homeowner applications. See back. OV. P100 This respirator assembly is NIOSH approved for use against certain airborne particles. The 3M Particulate Filter has at least 99.97% filtration efficiency against solid and liquid aerosols including oils. www.3MSafety.com. For more information in United States, see internet www.3MSafety.com or call 1.800.243-4630. In Canada, call 1-800.267-4414. Made in USA with globally sourced materials.