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Personal Protective Equipment - Respiratory Protection

§84.172 Airflow resistance test.

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 tight-fitting respiratory inlet covering of a complete particulate respirator mounted on a test fixture with air flowing at continuous rate of 85 ±2 liters per minute, before each test conducted in accordance with §84.173.

(b) Resistance of a complete tight-fitting powered air-purifying particulate respirator system will be measured with the blower off if the manufacturer indicates that the respirator should not be doffed in theevent of a blower failure.

Maximum Resistance [mm water-column height]
Respirator type	Inhalation		Exhalation
Respirator type	Initial	Final	Exhalation
Non-Powered (N, R, and P)	35	N/A	25
Powered (tight fitting) (HE class and PAPR100 class)	50	70	20

['Personal Protective Equipment']

['Respiratory Protection']

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