For Respirator Users
For more information on COVID-19 and PPE, please visit:
Key Respirator Resources
- Approved Particulate Filtering Facepiece Respirators (FFRs) with Donning Instructions
Tables listing NIOSH-approved FFRs in the seven classes. - Certified Equipment List (CEL)
A searchable list of commercially-available, respiratory personal protective devices approved by NIOSH to meet the requirements of Title 42, Code of Federal Regulations, Part 84. - Respirator Trusted-Source Information
Provides methods to identify NIOSH-approved filtering facepiece respirators and answers to frequently asked questions. - N95 Filtering Facepiece Respirator Infographics
- Closed-Circuit Escape Respirators Rules and Standards
- CCER’s approved under Subpart O (current)
- Chemical, Biological, Radiological, and Nuclear (CBRN) Respiratory Protection Handbook
General Respirator Information
- Respirator Topic page
A respirator is a personal protective device that is worn on the face, covers at least the nose and mouth, and is used to reduce the wearer’s risk of inhaling hazardous airborne particles, gases, or vapors. - Seasonal Influenza-related Respirator Research
Research projects that focus on various issues which affect the use of filtering facepiece respirators. - Respiratory Protection for Workers Handling Engineered Nanoparticles
Provides an update on the science and rationale behind NIOSH’s recommendations for the use and selection of respirators against engineered nanoparticles. - MultiVapor™ Version 2.2.5 Application
A computer tool for estimating breakthrough times and service life of air-purifying respirator cartridges. - Letters to Interested Parties
Official letters announcing public meetings, new requirements, NIOSH policies, and other information for our stakeholders.
Additional Resources
Page last reviewed: May 9, 2019
Content source: National Institute for Occupational Safety and Health