For those NMIs of countries that are signatories of the Metre Convention that do not hold primary standards for x-rays or gamma radiation, the BIPM offers calibrations of secondary standard ionization chambers in terms of the quantities and under the reference conditions determined by the CCRI(I).
These are described in Rapport BIPM-2007/06, together with the uncertainty budgets of the relevant BIPM standards.
Summary
For those NMIs of countries that are signatories of the Metre Convention that do not hold primary standards for x-rays or gamma radiation, the BIPM offers calibrations of secondary standard ionization chambers in terms of the quantities and under the reference conditions determined by the CCRI(I).
