| There are two categories of OIML Members:
Member States and
Member States are countries that have ratified the OIML Convention and that have officially sent the accession instrument to the French Government. Member States are morally obliged to implement as far as possible the decisions of the International Conference on Legal Metrology and in particular
Member States may actively participate in the OIML Basic Certificate System by designating Issuing Authorities. These Issuing Authorities are registered by the International Bureau of Legal Metrology (BIML - the permanent headquarters of the OIML), and are authorized to issue OIML Certificates of Conformity which are registered and published by the BIML.
These Issuing Authorities may participate in the Declarations of Mutual Confidence (DoMCs) signed in application of the OIML MAA, so that the results set out in their test reports are recognized by other participants of the DoMCs.
Corresponding Members are countries or economies that cannot, or do not yet wish to become Member States, but are interested in the work of the OIML and want to participate in it. They may be represented by the governmental metrology authority, legal metrology authority or trade regulatory authority, or they can be represented by a national institution or institute responsible for legal metrology issues.
Corresponding Members pay an annual fee to the Organization. In return:
For more information on becoming an OIML Member, please click here.