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NIOSH Answers FAQs on Respirator User Seal Checks - SUN News Report
Over 3 million United States employees in approximately 1.3 million workplaces are required to wear respiratory protection. The Occupational Safety and Health Administration (OSHA) (29 CFR 1910.134) requires an annual fit test to confirm the fit of any respirator that forms a tight seal on the wearer’s face before it is used in the workplace. Once a fit test has …