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Code of Federal Regulations
C.F.R. Title 42—Public Health
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
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Subpart F—Classification of Approved Respirators; Scope of Approval; Atmospheric Hazards; Service Time
§84.50 Types of respirators to be approved; scope of approval.
§84.51 Entry and escape, or escape only; classification.
§84.52 Respiratory hazards; classification.
§84.53 Service time; classification.
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