Page:NIOSH DM DFM respirator evaluation draft.pdf/24

This page has been proofread, but needs to be validated.

16

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

Table J—NIOSH's 1987 Recommended Assigned Protection Factors for Protection

Assigned Protection Factor	Type of respirator^[1]
5	Single-use (see definition in Glossary) or quarter mask^[2] respirator
10	―Any air-purifying half-mask respirator including disposable^[3] (see definition in Glossary) ―Any air-purifying full facepiece respirator equipped with a half-mask and operated in a demand (negative pressure) mode^[2]^[4] ―Any air-purifying full facepiece respirator equipped with any type of particulate filter^[5] ―Any supplied-air respirator equipped with a half-mask and operated in a demand (negative pressure) mode^[2]
25	―Any powered air-purifying respirator equipped with a hood or helmet and any type of particulate filter^[4] ―Any supplied-air respirator equipped with a hood or helmet and operated in a continuous flow mode^[4]
50	―Any air-purifying full facepiece respirator equipped with a high efficiency filter^[2] ―Any powered air-purifying respirator equipped with a tight-fitting facepiece and a high efficiency filter^[4] ―Any supplied-air respirator equipped with a full facepiece and operated in a demand (negative pressure) mode^[2] ―Any supplied-air respirator equipped with a tight-fitting facepiece and operated in a continuous flow mode^[4] ―Any self-contained respirator equipped with a full facepiece and operated in a demand (negative pressure) mode^[2]
1,000	Any supplied-air respirator equipped with a half-mask and operated in a pressure demand or other positive pressure mode^[2]
2,000	Any supplied-air respirator equipped with a full facepiece and operated in a pressure demand or other positive pressure mode^[2]
10,000	―Any self-contained respirator equipped with a full facepiece and operated in a pressure demand or other positive pressure mode^[2] ―Any supplied-air respirator equipped with a full facepiece operated in a pressure demand or other positive pressure mode in combination with an auxiliary self-contained breathing apparatus operated in a pressure demand or other positive pressure mode^[2]

↑ Only high efficiency filters are permitted for protection against particulates having exposure limits less than 0.05 mg/m³.
↑ ^2.00 ^2.01 ^2.02 ^2.03 ^2.04 ^2.05 ^2.06 ^2.07 ^2.08 ^2.09 The assigned protection factors (APF's) were determined by Los Alamos National Laboratories (LANL) by conducting quantitative fit testing on a panel of human volunteers.
↑ An APF of 10 can be assigned to disposable particulate respirators if they have been properly fitted using a quantitative fit test. Otherwise a 5 shall be assigned.
↑ ^4.0 ^4.1 ^4.2 ^4.3 ^4.4 The APF's were based on workplace protection factor (WPF) data or laboratory data more recently reported than the LANL data.
↑ The APF was based on consideration of efficiency of dust, fume, and/or mist filters.

[1] Only high efficiency filters are permitted for protection against particulates having exposure limits less than 0.05 mg/m³.

[:2-2] 2.00 ^2.01 ^2.02 ^2.03 ^2.04 ^2.05 ^2.06 ^2.07 ^2.08 ^2.09 The assigned protection factors (APF's) were determined by Los Alamos National Laboratories (LANL) by conducting quantitative fit testing on a panel of human volunteers.

[:3-3] An APF of 10 can be assigned to disposable particulate respirators if they have been properly fitted using a quantitative fit test. Otherwise a 5 shall be assigned.

[:4-4] 4.0 ^4.1 ^4.2 ^4.3 ^4.4 The APF's were based on workplace protection factor (WPF) data or laboratory data more recently reported than the LANL data.

[:5-5] The APF was based on consideration of efficiency of dust, fume, and/or mist filters.

[1]

[2]

[3]

[4]

[5]