Features of the 3M Particulate Respirator and Surgical Mask: ⢠Designed to help provide respiratory protection for the wearer. ⢠Has a filter efficiency level of 95% or greater against particulate aerosols free of oil. ⢠Fluid resistant - aids in reducing the potential exposure of the wearer to blood and other body fluids. ⢠Adjustable noseclip braided headbands and soft nose foam. ⢠Disposable. ⢠May be worn in surgery. ⢠Can fit a wide range of face sizes. This product meets CDC guide Mycobacterium tuberculosis exposure control. As a respirator it is intended to 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; when worn properly and in combination with protective eyewear it complies with the OSHA Bloodborne Pathogens Standard. It also provides 99% BFE against wearer generated micor-organisms (determined by the modified Greene and Vesley method).