Use the 3M™ 8247 R95 Particulate Respirator with 3M™ recommended nuisance level organic vapor relief, in environments such as foundries, undercoating, petrochemical operations and agricultural situations where particles are present with concentrations of organic vapors below the OSHA PEL. Certified to provide at least 95% efficiency against solid and liquid particles, including oils. 20 per box. Meets 42 CFR84 standard.