NMT Reference Sources provide a safe and convenient method of calibration and quality control of dose calibrators. The sources are manufactured with uniform distribution of the active element in 20 ml of epoxy. Each source is supplied in a 30 ml polyethylene vial. Implicitly traceable to NIST within ±5% at a 99% confidence level.

Cobalt-57, Cesium-137 and Barium-133 dose calibrator reference sources can be supplied in a set upon customer request.