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Title 42

Displaying title 42, up to date as of 7/10/2026. Title 42 was last amended 7/01/2026.
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Title 42Public HealthPart / Section
Chapter IPublic Health Service, Department of Health and Human Services2 – 199
Subchapter GOccupational Safety and Health Research and Related Activities80 – 88
Part 84Approval of Respiratory Protective Devices84.1 – 84.311
Subpart AGeneral Provisions84.1 – 84.3
§ 84.1Purpose.
§ 84.2Definitions.
§ 84.3Respirators for mine rescue or other emergency use in mines.
Subpart BApplication for Approval84.10 – 84.12
§ 84.10Application procedures.
§ 84.11Contents of application.
§ 84.12Delivery of respirators and components by applicant; requirements.
Subpart CFees84.20 – 84.24
Subpart DApproval and Disapproval84.30 – 84.36
Subpart EQuality Control84.40 – 84.43
Subpart FClassification of Approved Respirators; Scope of Approval; Atmospheric Hazards; Service Time84.50 – 84.53
Subpart GGeneral Construction and Performance Requirements84.60 – 84.66
Subpart HSelf-Contained Breathing Apparatus84.70 – 84.104
Tables to Subpart H of Part 84
Tables to Subpart H of Part 84
Subpart IGas Masks84.110 – 84.126
Subpart JSupplied-Air Respirators84.130 – 84.163
Subpart KAir-Purifying Particulate Respirators84.170 – 84.181
Subpart LChemical Cartridge Respirators84.190 – 84.207
Subpart M [Reserved]
Subpart NSpecial Use Respirators84.250 – 84.257
Subpart OClosed-Circuit Escape Respirators84.300 – 84.311
Subparts P-JJ [Reserved]
Appendix A to Part 84
Annual (Fixed) Respirator Certification Fees
Appendix B to Part 84
Application-Based Respirator Certification Fees