Patent ID: 7858924

Claim:
An optic module verification device for use in periodic normalization of a testing machine used to test samples in wells of reaction trays, where said testing machine includes X photon counters which each count photons emitted from different tray wells, where X is an integer greater than 1 , said verification device comprising: a verification tray defining at least X verification wells, said verification wells being located so as to each be associated with a different one of said photon counters when used in the testing machine; a photon emitter in each verification well, each photon emitter comprising a C 14 source, a scintillator adjacent said C 14 source, and a filter over said scintillator; wherein said photon emitters each have a determined initial base value for emitted photons, and each photon emitter is positioned in its verification well to emit photons through said filter to the associated photon counter when used in the testing machine.