Use these Particulate Filters with your 3-M Professional Respirator (34229) or other 3-M 5000, 6000 or 7000 series facepiece. These Particulate Filters are for removing solids from processing minerals, coal, iron ore, cotton, liquid or oil sprays that do not also emit vapors. Metal fumes produced from welding, brazing, cutting and other operations involving heating of metals. Radioactive particulate materials such as uranium and plutonium. Asbestos. Do not use for gases and vapors including those present in paint spray operations, unless combined with approved chemical cartridges. Not for Sandblasting.