– the intergovernmental organization through which Member States act together
     on matters related to measurement science and measurement standards.
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Joint BIPM, OIML, ILAC and ISO declaration on metrological traceability

Joint BIPM, OIML, ILAC and ISO declaration on metrological traceability

13 November 2018

The International Bureau of Weights and Measures (BIPM), the International Organization of Legal Metrology (OIML), the International Laboratory Accreditation Cooperation (ILAC) and the International Organization for Standardization (ISO) are four internationally recognized bodies which are responsible for metrology, accreditation and standardization world-wide.

Recognizing the importance of metrologically traceable measurement results to the core missions of these four Organizations, the above joint policy document has been drawn up. We encourage the Members of the four Organizations, as well as others for whom traceability is important, to adopt it. We also encourage other bodies to declare their support for the principles and practices embodied in this Declaration wherever possible.

The document reaffirms the declaration originally signed on 9 November 2011, which was built on the tripartite statement issued by the BIPM, the OIML and ILAC on 23 January 2006 on the relevance of various international agreements on metrology to trade, legislation and standardization.


BIPM logo OIML ILAC ISO
Martin Milton,
Director of the BIPM
Stephen Patoray,
Director of the BIML
Merih Malmqvist Nilsson,
Chair of ILAC
Sergio Mujica,
Secretary General of ISO


Related articles
Tripartite statement (BIPM-OIML-ILAC) on the relevance of various international agreements on metrology to trade, legislation and standardization (2006)
What is traceability?