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University of Arizona Filter Study (Fire Fighter Overhaul and Wildland Operations) - FY07

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


  • Test respirator breakthrough for multi-contaminant cartridges in burn center, where contaminants better represent overhaul exposures
multi-contaminant cartridges diagram

Applicable Standards

  • 29 CFR 1910.134
  • NFPA Respirator Standard (New)

Key Partners

  • None


  • Fire Fighters performing overall and wildland operations
  • Respirator manufacturers

Project Scope

  • Validate filter cartridge laboratory test method
  • Test air-purifying respirator (APR) cartridges for different combinations of burning materials
  • Evaluate effectiveness of APR's in overhaul and wildland operations


  • 4Q FY07
    • Identify ambient concentrations by burnt materials
    • Determine contaminant breakthrough of commercial canisters
    • Recommend changes to respirator cartridges for use by fire-fighters


  • Data to support establishment of a respirator standard by NFPA
  • Report of breakthrough contaminants
  • Listing of contaminant measures (e.g., CO, respirable particulates) indicating respirator ineffectiveness


  • Availability of appropriate cartridges for overhaul operations
  • Reduced chemical breakthrough
  • Reduced exposure risk while wearing APR's during overhaul
Page last modified: July 23, 2007
Page last reviewed: July 23, 2007 (archived document)
Content Source: National Institute for Occupational Safety and Health (NIOSH)