– the intergovernmental organization through which Member States act together
     on matters related to measurement science and measurement standards.
Search facility:

| Site map | News | Contact us
Resolution 1 of the 16th CGPM (1979)
Version française
Kilogram standards

    The 16th Conférence Générale des Poids et Mesures (CGPM),


    • that the accuracy of mass measurements rests upon the perfect conservation of kilogram standards, in particular platinum iridium prototype Kilograms,
    • that the transmission of this accuracy to kilogram standards made of other materials such as stainless steels is limited by an insufficient knowledge of the air buoyancy correction,
    • that this air buoyancy correction is usually calculated on the basis of ambient conditions, but there exist significant differences between the formulas used for this calculation among the different laboratories,


    • that laboratories study the effects of ambient conditions upon kilogram standards and the methods for improving their conservation,
    • that laboratories intensify their work aimed at an improved determination of the air buoyancy correction.

Comptes Rendus de la 16e CGPM (1979), 1980, p.99
Metrologia, 1980, 16(1), 55-61

The reader should note that the official version of this Resolution is the French text.

Other Resolutions of the 16th CGPM (1979)
Resolution 1
Resolution 2
Resolution 3
Resolution 4
Resolution 5
Resolution 6
Resolution 7