JCGM - IUPAC | International Union of Pure and Applied Chemistry

Who We Are
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What We Do
- Periodic Table of Elements
  Latest release based on the work of the Commission on Isotopic Abundances and Atomic Weights.
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- Recommendations and Reports
  Unambiguous and consistent nomenclature and terminology, evaluation of data, methods or techniques, guidelines and more.
- Nomenclature
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- Journals
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- Color Books
  Authoritative resources for chemical nomenclature, terminology, and symbols.
- Awards
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- JCGM
  The Joint Committee for Guides in Metrology.
- Projects
  How we do what we do and how we get the word out.
- Conferences
  Endorsement program and financial support opportunities.
Events
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News

The Joint Committee for Guides in Metrology (JCGM) maintains and promotes the use of the Guide to the Expression of Uncertainty in Measurement (and associated suite of documents collectively known as the GUM) and the International Vocabulary of Basic and General Terms in Metrology (VIM).

The JCGM is composed of eight international organizations working in the field of metrology – the International Bureau of Weights and Measures (BIPM), the International Organization of Legal Metrology (OIML), the International Organization for Standardization (ISO), the International Electrotechnical Commission (IEC), the International Union of Pure and Applied Chemistry (IUPAC), the International Union of Pure and Applied Physics (IUPAP), the International Federation of Clinical Chemistry and Laboratory Medicine (IFCC), and the International Laboratory Accreditation Cooperation (ILAC). IUPAC is a member of the JCGM since January 1997.

The latest versions of these and related publications can be downloaded free of charge from the BIPM website (here).