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Code of Federal Regulations (Last Updated: July 5, 2024) |
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Title 42 - Public Health |
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Chapter I - Public Health Service, Department of Health and Human Services |
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SubChapter G - Occupational Safety and Health Research and Related Activities |
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Part 84 - Approval of Respiratory Protective Devices |
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Subpart J - Supplied-Air Respirators |
§ 84.156 - Airflow resistance test; Type C supplied-air respirator, demand class; minimum requirements.
Latest version.
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§ 84.156 Airflow resistance test; Type C supplied-air respirator, demand class; minimum requirements.
(a) Inhalation resistance shall not exceed 50 millimeters (2 inches) of water at an air flow of 115 liters (4 cubic feet) per minute.
(b) The exhalation resistance to a flow of air at a rate of 85 liters (3 cubic feet) per minute shall not exceed 25 millimeters (1 inch) of water.