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REGSENSE
Topic Search
Personal Protective Equipment - Respiratory Protection

§84.122 Breathing resistance test; minimum requirements.

RegSense National Institute of Occupational Safety and Health (NIOSH), CDC, HHS Personal Protective Equipment Safety & Health CFR Regulations General Industry Safety CFR Section Respiratory Protection English Focus Area USA

(a) Resistance to airflow will be measured in the facepiece or mouthpiece of a gas mask mounted on a breathing machine both before and after each test conducted in accordance with §§84.124, 84.125, and 84.126, with air flowing at a continuous rate of 85 liters per minute.

(b) The maximum allowable resistance requirements for gas masks are as follows:

Maximum Resistance [mm. water-column height]
Type of gas mask	Inhalation		Exhalation
Type of gas mask	Initial	Final ¹	Exhalation
Front-mounted or back-mounted (without particulate filter)	60	75	20
Front-mounted or back-mounted (with approved particulate filter)	70	85	20
Chin-style (without particulate filter)	40	55	20
Chin-style (with approved particulate filter)	65	80	20
Escape (without particulate filter)	60	75	20
Escape (with approved particulate filter)	70	85	20
¹ Measured at end of the service life specified in Tables 5, 6, and 7 of this subpart.

['Personal Protective Equipment']

['Respiratory Protection']

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