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Working together to promote and advance the global comparability of measurements

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    About us

    Benefits of participation
    Benefits of participation
    • Page Benefits of participation
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    Governance
    Governance
    • Page Governance
    • CIPM
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    Our Mission and Objectives
    Our Mission and Objectives
    • Page Our Mission and Objectives
    • Our work programme
    • Knowledge transfer (CBKT)
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    Historical information
    Historical information
    • Page Historical information
    • Evolution of the SI
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  • CGPM (2026)
  • Coordination

    Coordination

    CIPM MRA
    CIPM MRA
    • Page CIPM MRA
    • Participating laboratories
    • Use of the CIPM MRA logo
    • Documents on the CIPM MRA
    • CIPM MRA Comparison reports
    • CMC approval process
    • JCRB
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    CIPM Forums
    CIPM Forums
    • Page CIPM Forums
    • Metrology and Digitalization
    CIPM Consultative Committees
    CIPM Consultative Committees
    • Page CIPM Consultative Committees
    • CCAUV
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    Capacity Building and Knowledge transfer: CBKT
    Guides in Metrology Committee: JCGM
    Guides in Metrology Committee: JCGM
    • Page Guides in Metrology Committee: JCGM
    • JCGM-WG1 (GUM)
    • JCGM-WG2 (VIM)
    International reference time scales
    International reference time scales
    • Page International reference time scales
    • Time FTP Server
    • Time Department Database
    Laboratory medicine: JCTLM
    Laboratory medicine: JCTLM
    • Page Laboratory medicine: JCTLM