Types of Respiratory Protection for CO

Respirator recommendations per NIOSH (Nation Institute for Occupational Safety and Health)

Up to 350 ppm: (APF = 10) Any supplied-air respirator
Up to 875 ppm: •(APF = 25) Any supplied-air respirator operated in a continuous-flow mode
Up to 1200 ppm: •(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted canister providing protection against the compound of concern
(APF = 50) Any self-contained breathing apparatus with a full facepiece
(APF = 50) Any supplied-air respirator with a full facepiece

Caucasian male with protective mask with laptop working in factory area.

Emergency or planned entry into unknown concentrations or IDLH conditions

(AFP= 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode.

(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus.

Escape

(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted canister providing protection against the compound of concern Any appropriate escape-type, self-contained breathing apparatus.