BRS now has available Mistral Security's Explosive Detection products in our Online Store. Starting with the Expray and Expen kits, we have made available for purchase Mistral's easy to use, unique pre- and post-blast field test kit designed to detect and identify Group A explosives.As a pre-blast tool, it screens against potential terrorist elements. As a post-blast tool, it can immediately analyze any residues at the site to determine whether explosives were present and if so, what kind or if the detonation was the result of some other phenomenon.