Chemical Companion


Designed for iPad

    • 3.0 • 8 Ratings
    • Free

iPad Screenshots


The Chemical Companion provides first responders with decision support for hazardous environments contaminated with chemical agents. This software tool is provided free-of-charge to the military, law enforcement, and fire departments.

Features include:
- Detailed information on 3000+ 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
- Over 30 Decision Support Tools

Important: This application is only accessible by authorized personnel. You may register for an account at .

What’s New

Version 4.08.06

Added Gas Cylinder Recognition Tool.
Added Fire Combustion Tool.
Added Fire Extinguishment Tool.
Added Skin Protection (PPE Selection) Tool.
Added SCBA Entry Management Tool.
Added Munitions Recognition Tool.
Added Destruction Tool.
Updated Emergency Response Guidebook Tool to the 2020 US and Australian versions.
Updated/Added detector data in Detector Tool.
Updated chemical data to incorporate additional threats and precursors.
Addressed user feedback and general software errors.

Ratings and Reviews

3.0 out of 5
8 Ratings

8 Ratings

Mug620 ,


Crashes any time you attempt to use any feature on latest iPad Pro

Rd1090 ,

Not usable

Anytime I try to log in to the app, it just crashes on my iPad Pro. Tried deleting and reinstalling.

App Privacy

The developer, MEPSS LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

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