The 3M™ AURA™ Health Care Particulate Respirator & Surgical Mask - MMM 1870+ are designed to provide respiratory protection for the wearer. It meets CDC guidelines for M. tuberculosis exposure control. Reduces wearer exposure to certain airborne particles including those generated by electrocautery, laser surgery, and other powered medical instruments. WARNING: These respirators help reduce exposures to certain airborne contaminants. Before use, the wearer must read and understand the User Instructions provided as a part of the product packaging.