The CIPM MRA has now been signed by the representatives of 92 institutes – from 52 Member States, 36 Associates of the CGPM, and 4 international organizations – and covers a further 147 institutes designated by the signatory bodies. Click here for the full list of participants.

The following institutes have signed the CIPM MRA since 1 January 2011:

• National Metrology Institute (NMI-SIRDC), Zimbabwe, on 14 January 2011;
• Zambia Bureau of Standards (ZABS) on 3 February 2011;
• Mauritius Standards Bureau (MSB) on 9 March 2011;
• National Metrology Laboratory, Bangladesh Standards and Testing Institution (NML-BSTI) on 25 March 2011;
• Saudi Standards, Metrology and Quality Organization (SASO) on 25 May 2011;
• Institute of Metrology of Bosnia and Herzegovina (IMBiH) on 15 June 2011;
• National Physical and Standards Laboratory (NPSL), Pakistan, on 6 July 2011;
• Bureau of Metrology (BMM), Montenegro, on 19 October 2011;
• Botswana Bureau of Standards (BOBS), Botswana, on 26 July 2012;
• National Standards and Calibration Laboratory (NSCL), Syrian Arab Republic, on 17 September 2012;
• European Space Agency (ESA) on 8 October 2012;
• Namibian Standards Institution (NSI), Namibia, on 16 October 2012;
• Instituto Nacional de Metrología de Colombia (INM), Colombia, on 15 May 2013.