Isotrak Calibration Sources

HTSL are the UK distributor for Eckert & Ziegler Isotrak™ Product Lines which are part of Eckert & Ziegler’s ‘Isotope Products Business Segment’ which provides high quality radioactive reference sources and solutions for the checking and calibration of radiation measurement instruments. They are manufactured at E&Z Isotope Products in Valencia, USA,  E&Z Analytics in Atlanta, USA and E&Z Nuclitec in  Braunschweig, Germany.

HTSL offer a seamless service from order to delivery, In addition to our standard catalogue items, we offer custom and one-off design and manufacturing services.

Please download a copy of the brochures below and contact us with your requirements.


HTSL can provide an extensive range of sealed and unsealed radiation sources for reference and calibration that are manufactured to the highest standards and comply fully with applicable national and international standards.

Eckert and Ziegler Isotope Products Reference and Calibration Source

Eckert and Ziegler Isotrak Product Range

Replacement Products for QCY Mixed Nuclide Solutions

Eckert and Ziegler Analytics Product Range