3M 1860 N95 Face Masks. 20 pcs per box. NIOSH Approved: N95, FDA Cleared for use as surgical mask, Helps protect against certain airborne biological particles, Helps protect against certain airborne biological particles, reduce wearer exposure to certain airborne particles including those generated by electrocautery, laser surgery, and other powered medical instruments. As a surgical mask, it is designed to be fluid resistant to splash and spatter of blood and other infectious materials. Features include: (bul) NIOSH approved N95 (bul) Meets CDC guidelines for Mycobacterium tuberculosis exposure control (bul) FDA cleared for use as a surgical mask (bul) >99% BFE (Bacterial Filtration Efficiency) according to ASTM F2101 (bul) Fluid resistant according to ASTM F1862 (bul) Respirator contains no components made from natural rubber latex.