– the intergovernmental organization through which Member States act together
     on matters related to measurement science and measurement standards.
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The United Mexican States

The United Mexican States became a Member State in 1890.

In November 2014 the CGPM elected Dr Ismael Castelazo, Director General for Technology Services, CENAM, to the CIPM. Dr Castelazo started his term at the March 2015 session of the CIPM.

Dr Castelazo is President of the Consultative Committee for Length (CCL).

Representatives of the NMIs or designated institutes of the United Mexican States (see CIPM MRA) participate in the following Consultative Committees:


Km 4,5 Carretera a Los Cués
El Marqués
CP 76246 Querétaro
Tel.: + 52 442 211 05 00 to 04
Web: http://www.cenam.mx/
Participating in the CIPM MRA since: 14 October 1999

Signed by: Héctor NAVA-JAIMES (then Director General, CENAM)
  • Centro Nacional de Metrología (CENAM), Querétaro

  • Designated institute(s):
  • For concentration of ozone in ambient air: Instituto nacional de ecología y cambio climático (INECC), Ciudad de México
  • For ionizing radiation: Instituto Nacional de Investigaciones Nucleares (ININ), La Marquesa, Ocoyoacac

  • click to go to the KCDB

    Over the last 15 years this State has benefited from BIPM comparison and calibration services in the following fields:

    • Chemistry
    • Electricity
    • Ionizing Radiation
    • Mass
    • Time

    BIPM calibration certificates issued to the United Mexican States and/or its NMI(s)

    Delegates at the meeting of the CGPM in November 2018:
    • Dr Ismael Castelazo
    • Dr Víctor Jose Lizardi Nieto (Head of Delegation)

    Nationals having participated in/benefited from the BIPM CBKT programme:

    National institutes having sponsored a BIPM CBKT initiative (in full or in part):

    • No sponsorship yet

    Member States
    Related articles
    Notice of Contributions
    Calculating Member State contributions
    List of Member States
    Signatories of the MRA
    Participation in
    keychart and supplementary comparisonschart
    Number of CMCs published per domaintable
    NMI Directors and State Representatives