Occupational Hygiene
New data from University of Cincinnati illuminate research in occupational hygiene
Published in Medical Verdicts and Law Weekly, July 10th, 2008
According to recent research from the United States, "This study aimed at determining the protection factors (PFs) provided by N95 filtering facepiece respirators and surgical masks against particles representing bacterial and viral size ranges (aerodynamic size: 0.04-1.3 mu m). The protection levels of N95 filtering facepiece respirators (four models) and surgical masks (three models) were investigated while they were donned by 12 subjects performing the OSHA (US Occupational Safety and Health Administration) fit-testing exercises in a test chamber."
"About 29% of N95 respirators and similar to 100% of surgical masks had PFs < 10, which is the assigned PF designated...
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