Validated Sterile face masks features both 3-ply ES with PU band material or 3-ply SBPP face mask with OP band. Both masks are packed in cleanroom environment and are Gamma irradiated to a Sterility Assurance Level (SAL) of 10-6 to allow for use in aseptic and critical areas. Circular Red Sticker on the packaging ensures face masks passed through sterilization process. Sterile face masks can be used in critical sterile environments such as pharmaceutical areas, sterile suites, microbiological laboratories and biotechnology manufacturing facilities.