The 3M 8233 N100 Particulate Respirator is well suited for those who want NIOSH's highest rated filtration efficiency in a maintenance free respirator. It provides a minimum filter efficiency of 99.97% against non-oil based particles. This respirator is an excellent choice for lead abatement, pharmaceutical manufacturing, welding and work involving substance specific regulated particles excluding those containing oil aerosols and asbestos. The 8233 offers a number of benefits to you and your workers: