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Total Inward Leakage (TIL) - FY06

NOTE: This page is archived for historical purposes and is no longer being maintained or updated.
Current Information can be found at: Total Inward Leakage (TIL) - FY07


  • Develop NPPTL Total Inward Leakage (TIL) testing capability and performance requirements for Half-mask respirators for inclusion in 42CFR Part 84
Testing with Portacount

Applicable Standards

  • 42 CFR Part 84

Key Partners

  • Respirator Manufacturers


  • OSHA
  • Manufacturers
  • Employers
  • Labor Unions
  • Employees

Project Scope

  • Perform Bench mark testing of current respirators. Analyze data and present proposed criteria for testing and certification


  • Completed State of the art testing for 101 respirators
  • Analyze data
  • Hold public meeting


  • Review of state of the art
  • Proposed performance requirements


  • Manufacturers evaluating their products for compliance with the proposed regulation
Page last modified: July 23 2007
Page last reviewed: July 23, 2007 (archived document)
Content Source: National Institute for Occupational Safety and Health (NIOSH)