Standard Application Procedures for each class of respirator.
Collection of NIOSH Conformity Assessment Notices and Letters.
- Provides respirator certification fee tables and corresponding Standard Test Procedures.
- List of application-based fees and corresponding STPs for air-purifying respirators.
- List of application-based fees and corresponding STPs for air-supplied respirators.
- List of application-based fees and corresponding STPs for combination CBRN APRs/ASRs.
- Information for manufacturers on how to apply for respirator approval.
- Information on NIOSH's respirator post-market conformity evaluations.
Learn More
The NIOSH RAP tests and approves respirators. Status of current approval projects updated weekly.
Learn more about personal protective equipment and NIOSH resources.
New and Noteworthy
![[thumbnail] (hidden)](/niosh/media/images/2026/08/NPPTL_INFO_ProtectingIntegrityNIOSHApproval_Aug26-thumb.png)
NIOSH has taken action to remove online product listings that misrepresent the NIOSH approval.
NIOSH supports workers through research, respirator approval, and respiratory protection resources.
- NIOSH contributes to private sector standards development.
- Details the results of performance testing on fraudulent respirator filters and cartridges
- This PPE Case Notes shares the results of fraudulent P100 filter performance testing.
- This PPE Case Notes shares the results of fraudulent combination cartridge performance testing.
- This PPE Case Notes shares the results of fraudulent chemical cartridge performance testing.