TSA Systems, founded in 1987, has been a world leader in the design and manufacture of sensitive radiation portal monitors and instruments for measuring Radioactive and Special Nuclear Materials (SNM). An extensive product line of gamma, gamma-neutron, and neutron monitors have been masterfully created with comprehensive, consistently reliable testing features. These radiation portal monitors are able to detect small amounts of Plutonium, including weapons grade Plutonium in accordance with the requirements of ASTM International (USA), GOST (Russia) standards, and the ITRAP program. TSA Systems is now part of Rapiscan and all of their products can now be found by clicking here.