State Primary Standard of Unit of Radionuclide Activity

Reproduction and maintenance of the unit of activity of radio nuclides. Dissemination of the unit of activity of radio nuclides to the secondary measuring standards, working standards and working instruments of the measuring technology by means of the method of direct measurements or comparison with a help of radionuclide radiation sources in accordance with DSTU 3743-98 “Metrology. National verification scheme for measuring instruments of activity of radio nuclides”.

Metrological characteristics


from 5 Bk to 5⋅1012 Bk

Uncertainty by type A (uA)


Uncertainty by type B (uB)


Total standard uncertainty (uC)


Extended uncertainty (U)