Page:Niosh tb guidelines.pdf/44

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V.   NIOSH Recommendations for Personal Respiratory Protection
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Figure 1—Example A of a NIOSH-Certified, Powered, HEPA-Filter, Halfmask Respirator (MSA Powered, Air-Purifying Respirator, NIOSH approval TC-21C-186).

Man wearing a halfmask powered-air-purifying respirator
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