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

The United States of America became a Member State in 1878.

Dr James Olthoff, Associate Director for Laboratory Programs, NIST, was elected to the CIPM by the 26th CGPM (November 2018).

The CIPM elected him Vice-President of the CIPM on 20 March 2019.

Willie E. May, former Director, NIST, is President of the Consultative Committee for Amount of Substance – Metrology in Chemistry (CCQM).

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

Note: This summary chart also includes personal members where applicable.

100 Bureau Drive, Mail Stop 1000
MD 20899-1000 Gaithersburg
Tel.: + 301 975 2300
Fax: + 301 975 8972
Web: http://www.nist.gov/
Participating in the CIPM MRA since: 14 October 1999

Signed by: Karen H. BROWN (then Deputy Director, NIST)
  • National Institute of Standards and Technology (NIST), Gaithersburg

  • Designated institute(s):
  • For acoustics: sound in water: US Naval Undersea Warfare Center Division Newport (NUWC-USRD), Newport (from 12 November 2019)

  • 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 States of America and/or its NMI(s)

    Delegates at the meeting of the CGPM in November 2018:
    • Dr Willie E. May
    • Dr Yoshihiro Ohno
    • Dr Claire M. Saundry
    • Dr Eric Lin
    • Dr James K. Olthoff
    • Mrs Barbara Cordero
    • Dr Walter Copan (Head of Delegation)

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

    Nationals having contributed to the BIPM CBKT programme:

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

    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