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This standard establishes levels of respiratory protection and functional requirements for SCBA used by emergency services personnel.
Requirements cover certification, labeling, design requirements, performance requirements, and test methods and apply to all open-circuit SCBA and combination SCBA/SARs used during fire fighting, rescue, hazardous materials, terrorist incidents, and similar operations where responders may encounter confined spaces, atmospheres that are unknown, atmospheres that are or could become Immediate Dangerous to Life and Health (IDLH), or atmospheres that are or could become oxygen deficient.
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