The Bureau International des Poids et Mesures (International Bureau of Weights and Measures, or BIPM) is a standards organization, one of the three organizations established to maintain the SI system under the terms of the Metre Convention.
According to its official site (http://www.bipm.org/en/home/):
The task of the BIPM is to ensure world_wide uniformity of measurements and their traceability to the International System of Units (SI).
It does this with the authority of the Convention of the Metre, a diplomatic treaty between fifty-one nations, and it operates through a series of Consultative Committees, whose members are the national metrology laboratories of the Member States of the Convention, and through its own laboratory work.
The BIPM carries out measurement-related research. It takes part in, and organizes, international comparisons of national measurement standards, and it carries out calibrations for Member States.
The International Bureau of Weights and Measures (BIPM) was set up by the Metre Convention and has its headquarters near Paris, France.
It is financed jointly by the Member States of the Convention and operates under the exclusive supervision of the CIPM.
The BIPM has an international staff of over 70 and its status vis-à-vis the French Government is similar to that of other intergovernmental organizations based in Paris.
Weltweit stellen mehrere Zeitinstitute die SI-Sekunde mit Hilfe von Atomuhren dar, das BIPM übernimmt den Abgleich dieser Darstellungen.
Bei Einheiten, die durch ein körperliches Normal definiert sind (oder waren), ist das BIPM darüber hinaus für die Aufbewahrung der Referenzkörper zuständig, z.
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