Measurement standards
The task of STUK is to maintain measurement standards which ensure the reliability of radiation measurement. Measurement standards are accurate devices, methods, or radiation sources which are used to calibrate measurement devices. National metrological activities are the foundation for radiation measurements in Finland to be adequately accurate and internationally comparable.
Measurement standards for X and gamma radiation are ionisation chambers. Standards for beta and neutron radiation are radiation sources with several different radiation energies. STUK’s measurement standards are calibrated at the International Bureau of Weights and Measures (BIPM) laboratories in France and also at the English (NPL) and German (PTB) national measuring laboratories.
STUK is a member in a network for ionising radiation standard laboratories jointly maintained by the International Atomic Energy Agency (IAEA) and the World Health Organisation (WHO). STUK participates yearly in the comparison measurements arranged by the network.
