Both on the global and on the regional level a number of authorative organisations are active in the field of measuring standards and reference materials.

BIPM
On basis of the Meter Convention it is the task of the BIPM to ensure worldwide uniformity of measurements and their traceability to the International System of Units (SI).

EUROMET
EUROMET is a cooperation of national measuring institutes within the EU and AFTA countries.

EURACHEM
EURACHEM is a network of organizations in Europe that aims at the realization of a system of traceability of chemical measurements and to promote good quality practices.