Gas standards of 3H, 14C, 85Kr and 133Xe are realised by means of absolute length-compensated internal-gas proportional counting. Our system can be used to measure gases over a range of activity concentrations with an accuracy as low as ± 1 % (k = 2). The system is compatible with a range of carrier gases and container types, including cylinders and glass ampoules.
Current areas of research include:
Find out more about NPL's Standard radionuclide solutions service
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