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WORKING DRAFT 9.15.92—Performance Evaluation of DM and DFM Filter Respirators
59

Table O—Statistical Analysis of Control Failure Rates for Some Published and Unpublished WPF Studies for Non-Powered, Air-Purifying Halfmasks.

Study Biased Control Failure Rate per 100 Wearers for APF of 10
(Note A)
Biased UCL on Actual Failure Rate per 100 Wearers
(Note B)
Fit Test Used NIOSH-Type Deep Probe Used?
(Note C)
Lung-Retention Correction?
(Note D)
Authors
1 5.0 8.9 Irritant smoke Example Example Example
2 4.7 12.7 QNFT,
FF > 100
Example Example Example
3 4.8
4.2
2.1
2.0
0.2
14.2
12.1
8.5
7.2
2.3
Saccharin Example Example Example
4 2.0 6.3 QNFT,
FF > 250
Example Example Example
5 0.9
0.7
2.8
1.9
Saccharin Example Example Example
6 0.7 3.2 Saccharin Example Example Example
7 0.6
0.1
0.04
4.1
1.7
0.9
Saccharin Example Example Example
8 0.5
0.1
0.02
0.01
4.4
2.0
1.2
0.8
Saccharin Example Example Example
9 0 0 Isoamyl
acetate
Example Example Example
Centers for Disease Control
Centers for Disease Control