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NIOSH Science Policy Update: Individual Fit-Testing Recommendation for Hearing Protection Devices [2025-01]
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2025-01-01
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Series: NIOSH Numbered Publications
[PDF-175.74 KB]
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Description:The following describes the NIOSH policy for determining the attenuation provided by hearing protection devices for individual workers. This statement serves as an update to the 1998 NIOSH Criteria for a Recommended Standard—Occupational Noise Exposure.
Recommendation: NIOSH recommends employers use individual, quantitative fit testing to evaluate the attenuation received by workers from their hearing protection devices. Quantitative fit testing is the physical or psychophysical measurement of noise/sound attenuation provided by a hearing protector. Fit testing results in an objective Personal Attenuation Rating (PAR) that accurately reflects the level of sound reduction an individual worker receives while wearing a specific hearing protector or it indicates an individual has achieved a specified level of protection. Employers should integrate individual fit testing into their hearing loss prevention programs.
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Pages in Document:2 pdf pages
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NIOSHTIC Number:nn:20070452
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Citation:NIOSH [2025]. NIOSH Science Policy Update: Individual Fit-Testing Recommendation for Hearing Protection Devices. Cincinnati, OH: U.S. Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, DHHS (NIOSH), Publication No. 2025-104, DOI: https://doi.org/10.26616/NIOSHPUB2025104
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