Detective-EX-100, hand-held nuclide identifier, boasts fast, accurate readings. Gamma-ray detectors based on High-purity Germanium (HPGe) allow unit to positively identify nuclear materials. Identifies low-energy radiation emitters (including highly enriched Uranium) and medium- to high-energy emitters, such as Plutonium or naturally occuring radioactive materials (NORMs), such as porcelin fixtures, kitty litter, and ceramic tile. HPGe crystals detect minute amounts of neutrons and gamma rays emitted by radioactive materials. Miniturized refrigeration system eliminates the need to carry liquid nitrogen to cool device's HPGe crystals. Ortec Products Group, Div. of Ametek, Oak Ridge, TN