Mutual Recognition Arrangement

The objectives of the CIPM MRA are stated as:

  • to establish the degree of equivalence of national measurement standards maintained by NMIs
  • to provide for the mutual recognition of calibration and measurement certificates issued by NMIs
  • thereby to provide governments and other parties with a secure technical foundation for wider agreements related to international trade, commerce and regulatory affairs

The objectives of the CIPM MRA are to be achieved through:

  • International comparisons of measurements, to be known as key comparisons
  • Supplementary international comparisons of measurements
  • Quality systems and demonstrations of competence by NMIs