Table 2.

Percentage of 101 respirator models meeting the specified RFC criteria using five different evaluation methods for acceptable fit.^a

	Percentage of 101 Models Meeting the Specified PPR (%)
Criteria for Determining Acceptable Fit	19 of 25 Subjects Passing (PPR >75%)	13 of 25 Subjects Passing (PPR >50%)
Criterion 1: Achieve  Harmonic Mean FF ≥100 for Three Donnings	13	35
Criterion 2: Achieve Two FFs  ≥100 On First Two Donnings	10	31
Criterion 3: Achieve FF ≥100  On First Donning	19	40
Criterion 4: Achieve FF ≥100  On At Least One of First Two Donnings	29	55
Criterion 5: Achieve FF ≥100  On At Least One of Three Donnings	32	58

^aAnalysis performed as individual models (i.e., models were not grouped as families for this analysis).