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Fit Test Pilot Studies - FY12

NOTE: This page is archived for historical purposes and is no longer being maintained or updated.


  • Evaluate the efficacy and benefit of user seal checks (USCs) on N95 Filtering Facepiece Respirators (FFRs)
  • Evaluate emerging technologies for their potential to locate FFR leaks and identify good and poor fitting FFRs
Infra Red leakage photo and person conducting User Seal Check

Applicable Standards

  • 29 CFR 1910.134 Appendices A, B1 and D
  • 42 CFR 84

Key Partners

  • None



  • OSHA
  • Manufacturers
  • Employers
  • Labor Unions
  • AIHA
  • Respirator Users
  • Healthcare workers
  • Hospital administrators
  • Policy makers
  • Law enforcement
  • Nursing home workers
  • General public

Project Scope

  • Conduct quantitative fit tests on N95 FFRs under varied conditions to assess USC efficacy and /or determine if emerging technologies (IR camera, ultrasound) may be useful in assessing FFR fitting characteristics or discriminating between an adequate and a poor seal between the FFR and the user's face


  • None, project is completed


  • Peer-reviewed publications (2)
  • Presentation at conference and/or stakeholder meetings (2)


  • Pilot data is used to support full project proposals
  • Pilot data is used by NIOSH, CDC, OSHA, ISO, and ANSI, in guidance documents, standards, and regulations
Page last updated: April 17, 2012
Page last reviewed: April 17, 2012
Content Source: National Institute for Occupational Safety and Health (NIOSH)
National Personal Protective Technology Laboratory