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     on matters related to measurement science and measurement standards.
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CCM Working Group on Pressure and Vacuum (CCM-WGPV)

Terms of reference

The CCM Working Group on Pressure and Vacuum (WGPV) is concerned with the metrology of gauge, differential and absolute pressure as well as very low gas flow related to vacuum and sealing technology.
The main tasks of the group are:

    To advise the CCM on issues related to pressure and vacuum metrology;

    To maintain service categories for the units realized by the WG and used in the BIPM database to register CMCs;

    To define and organize the CIPM Key Comparisons for establishing the equivalence of national primary standards for pressure and vacuum and very low gas flow at the highest accuracy level mainly to provide sufficient linkage between RMO and the CCM WGPV;

    To review the results of completed key and supplementary comparisons;

    To set the technical criteria for establishing and reviewing CMCs in the field;

    To organize and perform reviews of CMCs in the field;

    To encourage and, if requested, coordinate research and development in the field of pressure and vacuum metrology to cope with the present and future needs of science, industry and society worldwide;

    To provide guidelines in the field of pressure and vacuum metrology related to the CIPM MRA.


  • Dr Karl Jousten  (PTB)


  • Dr Jorge Torres-Guzman  (CENAM)


  • CEM (Centro Espańol de Metrología)
  • CENAM (Centro Nacional de Metrología)
  • CMI (Czech Metrology Institute)
  • INRIM (National Institute of Metrological Research/Istituto Nazionale di Ricerca Metrologica)
  • KRISS (Korea Research Institute of Standards and Science)
  • LNE (Laboratoire National de Métrologie et d'Essais)
  • METAS (Federal Institute of Metrology METAS)
  • MSL (Measurement Standards Laboratory of New Zealand)
  • NIM (National Institute of Metrology)
  • NIS (National Institute of Standards)
  • NIST (National Institute of Standards and Technology, United States Department of Commerce)
  • NMC, A*STAR (National Metrology Centre, Agency for Science, Technology and Research)
  • NMIA (National Measurement Institute, Australia)
  • NMIJ/AIST (National Metrology Institute of Japan, AIST)
  • NMISA (National Metrology Institute of South Africa)
  • NPLI (CSIR National Physical Laboratory of India)
  • NRC (National Research Council of Canada)
  • PTB (Physikalisch-Technische Bundesanstalt)
  • UME (National Metrology Institute of Turkey/TÜBITAK Ulusal Metroloji Enstitüsü)
  • VNIIM (D.I. Mendeleyev Institute for Metrology, Rosstandart)
  • RMO Technical Committee chairs in the field of Mass and Related Quantities or their representatives

  CCM: Upcoming meetings
17–21 May 2021: 18th meeting of the CCM and related meetings

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Workshop on the mise en pratique (Nov. 2012)