WILMINGTON, MA -- (MARKET WIRE) -- August 09, 2006 -- Ahura Corporation, award-winning manufacturer of the FirstDefender Handheld Chemical Identification system, today announced DecisionEngine MX 2.5, the latest upgrade to the company's innovative embedded analysis software. DecisionEngine MX 2.5 maintains the same intuitive user interface as earlier versions, but is backed by a new foundation that supports larger library capacity and enhanced handling of fluorescent samples. DecisionEngine MX 2.5 adds nearly 800 new substances -- including significant additional chemical weapons, white powders and inorganics -- for more robust identification of unknown liquids and solids.