The Isotrak™ product line offers the world's largest variety of radioactive reference sources and standardised solutions for the confident calibration of radiation measurement instruments in health physics and nuclear medicine.

Isotrak™ reference sources are manufactured in DKD and UKAS accredited laboratories in Germany and the UK and are fully traceable to NIST. We are a founder member of the NEI/NIST Measurement Assurance Program.

We also offer a selected range of 'state of the art' portable and personal dosimetry measuring devices.