Approval Status                                

NSAI NML is a signatory to the mutual recognition arrangement (MRA) of the International Committee of Weights and Measures (CIPM). The CIPM MRA* provides for the mutual recognition of national measurement standards and of calibration certificates issued by national metrology institutes world-wide.

The NSAI NML quality system satisfies the requirements of the International Committee for Weights and Measures (CIPM) Mutual Recognition Arrangement (MRA) for recognition of national measurement standards; and as such, has been recognized as conformant to the ISO/IEC 17025 by EURAMET.

The National Standards maintained by NML and the calibration certificates issued are approved under the CIPM MRA. NSAI NML is also certified to ISO9001.

Review details on the MRA official document signed by NML and BIPM. Full details on the MRA including all approved CMCs and intercomparison results may be found at the website of the Bureau International des Poids et Measures.

 Acceptance of Calibration Certificates

The use of the CIPM MRA logo is issued under the authority and with the permission of the BIPM. By placing the logo on a calibration certificate, NSAI NML is indicating that the calibration falls within NSAI NML’s calibration and measurement capabilities (CMCs) published under the CIPM MRA. A certificate issued by a laboratory under the CIPM MRA can be accepted by assessors from Conformity Assessment Bodes with the highest level of confidence.