1. LawStack
  2. Title 42 - Public Health
  3. Chapter I - PUBLIC HEALTH SERVICE, DEPARTMENT OF HEALTH AND HUMAN SERVICES
  4. Subchapter G - OCCUPATIONAL SAFETY AND HEALTH RESEARCH AND RELATED ACTIVITIES
  5. Part 84 - APPROVAL OF RESPIRATORY PROTECTIVE DEVICES
  6. Subpart J - Supplied-Air Respirators
  7. 42 CFR § 84.154
42 CFR § 84.154
Airflow resistance test; Type B and Type BE supplied-air respirators; minimum requirements
June 11, 2020
CFR

(a) Airflow resistance shall be determined when the respirator is completely assembled with the respiratory-inlet covering and the hose in the maximum length to be considered for approval, coiled in loops 1.5 to 2.1 m. (5 to 7 feet) in diameter.

(b) Airflow resistance shall not exceed 38 mm. (1.5 inches) of water-column height to air drawn at the flow rate of 85 liters (3 cubic feet) per minute.

(c) The exhalation resistance shall not exceed 25 mm. (1 inch) of water-column height at this flow rate.

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§ 84.153 Airflow resistance test, Type A and Type AE supplied-air respirators; minimum requirements
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§ 84.157 Airflow resistance test; Type C supplied-air respirator, pressure-demand class; minimum requirements

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