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Abstract
The National Institute for Occupational Safety and Health has proposed to amend the certification rules for half mask air-purifying particulate respirators. The amendment would require the certified respirator to fit a minimum percentage of the intended users. The fail/pass rate for a respirator fitting a worker population has not been part of the certification process for particulate respirators since 1995. The amendment would also add a new requirement for the manufacturer to inform whom the respirator is intended to fit.
ACKNOWLEDGMENTS
The author thanks Dr. Michael Morgan, University of Washington, for his review and comments. The contents are solely the responsibility of the author and do not necessarily reflect the views of the reviewers or the state of Washington.