C.F.R. » Title 42 » CHAPTER I—PUBLIC HEALTH SERVICE, DEPARTMENT OF HEALTH AND HUMAN SERVICES › SUBCHAPTER G—OCCUPATIONAL SAFETY AND HEALTH RESEARCH AND RELATED ACTIVITIES › PART 84—APPROVAL OF RESPIRATORY PROTECTIVE DEVICES › Subpart J—Supplied-Air Respirators

42 C.F.R. § 84.147

Type B supplied-air respirator; minimum requirements

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No Type B supplied-air respirator shall be approved for use with a blower or with connection to an air supply device at positive pressures.