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New Sensor Technology Development for End of Service Life Indicators-FY06

NOTE: This page is archived for historical purposes and is no longer being maintained or updated.
Current Information can be found at: New Sensor Technology Development and Integration for End of Service Life Indicators-FY07


  • Produce an intelligent respirator with ESLI to improve health of air-purifying respirator users and comply with OSHA regulations.
Respirator with End of Service Life Indicator (E S L I)

Applicable Standards

  • OSHA standard 1910.134(d)(3)(iii)(B)(2) 42 CFR Part 84 Subpart G, Section 84.1157. Vol 60, Number 110

Key Partners

  • Carnegie Mellon University, Research partner
  • U. S. Air Force AFOSR, Funding partner


  • General industry workers and emergency responders will benefit by being able to determine the residual service life as well as the end of service life of respirator cartridges.

Project Scope

  • Polymer synthesis
  • Inkjetting of polymers
  • Sensor data analysis
  • Development of working partnerships
  • Produce sensor system based on CMU information


  • Produce a cartridge simulator
  • Characterization of sensor design (temp, RH, heating) in cartridge simulator
  • Develop a demo device
  • Produce 80 prototype sensor systems for integration
  • CMU annual report


  • Four publications- IEEE Sensors 2005, SPIE, Sensors & Actuators, ACS nanoletters
  • Presentations to ORC and ISEA


  • Respirators with ELSI/RSLI capabilities are the first probable commercial products to result from this work.
  • Implementation of these devices in respirators could result in modification of certification standards.
Page last modified: July 23, 2007
Page last reviewed: July 23, 2007 (archived document)
Content Source: National Institute for Occupational Safety and Health (NIOSH)