The software is only available to approved users so please register today.


  • Windows version 4.5 and Android version 4.4 are available for download.
  • iPad version 4.4 is available on the App Store (requires a chemical companion account).
  • The new version includes 300+ new chemicals, canister life estimation, firefighter guidance, volume calculator, and additions to scenario specific tools.
  • We currently do not support mobile phone platforms such as the iPhone. Individual mobile apps are in development. If you or your agency are in need of specific requirements, please contact us to discuss solutions.


The Emergency Response Decision Support System (ERDSS) provides first responders with decision support for hazardous environments contaminated with chemical agents. This software tool, which operates on Windows and iOS, is provided free-of-charge to the military, law enforcement, and fire departments.
Features include:
  • Detailed information on 2,000 common chemicals and synonyms
  • Personal Protective Equipment (PPE) including respirators
  • Hazardous Concentration Levels and Exposure Guidelines
  • Isolation and Protective Action Distances
  • ERG and Emergency Medical Information
  • Identify unknown chemicals using physical properties or exposure symptoms
  • Decision Support Tools and more...