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 Respirator Approval Program is responsible for testing and approving respirators.
Learn more about personal protective equipment and NIOSH resources.
New and Noteworthy
![[thumbnail] (hidden)](/niosh/media/images/2026/07/FY_26_CEL_Web_508-thumb.png)
Infographic detailing NIOSH's respirator approval numbers from January to June 2026.
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.