Note

The official French text of the ITS-90 is published by the BIPM as part of the Prochès-verbaux of the Comité International des Poids et Mesures (CIPM). An English version appeared in Metrologia, 1990, 27, 3-10. (This text was later corrected).

The version appearing on this site is based on that of Metrologia.

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