Page:NIOSH DM DFM respirator evaluation draft.pdf/56

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Performance Evaluation of DM and DFM Filter Respirators—WORKING DRAFT 9.15.92

program, from less than 1% to substantially more than 10% of American workers will not achieve APF-level protection with their respirator facepieces. These percentages consider only face-seal leakage. Any additional leakage through filters or sorbent elements will increase the percentage of wearers not achieving APF-level protection.

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