This technology is based upon chemical reactions that occur when CW agents interact with various solutions and substrates. The most common indicator (for a positive response) is a color change. CWA detection tubes use some form of surface or substrate to which a reagent solution is applied. Many of these kits are complex and include multiple tests for specific agents or families of agents. Color change detectors can detect nerve, blister, and blood agents.
Rapid identification of the chemical or biological agents involved in any hazardous material (Hazmat) incident is vital to the protection of first responders and emergency medical personnel at local medical facilities as well as to the effective treatment of casualties.
_List_of_Hygitest_Chemical_Warfare_Agent_(CWA)_Detection_Tubes.jpg)
BR 36830 
US 8725 
IN 6374 
AR 4945 
VN 3992 
RU 3461 
EC 2505 
GB 2109 
