3M R95 Particulate Disposable Respirator is certified to provide at least 95% efficiency against solid and liquid particles, including oils. It is lightweight and comfortable that includes no spare parts to clean and maintain. It meets NIOSH 42 CFR 84 requirement and promotes greater worker comfort. It is economical protection that contributes to increased wear time. It is applicable in foundries, lab settings, agriculture, petrochemical, undercoating. It is sold as 20 per box. Do not use for gases and vapors, including those present in paint spraying operations, oil aerosols, asbestos or sandblasting.