Our cost-effective Surgical N95 Respirators meet Centers for Disease Control and Prevention (CDC) guidelines for protection against TB and is National Institute for Occupational Safety and Health (NIOSH) certified to have a filter efficiency level of 95 percent or greater against particulate aerosols free of oil. As the front lines of filtration, these Surgical N95 Respirators are also Food and Drug Administration (FDA) cleared for use in the OR during surgical procedures.