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Comparison of Solid Density Standards Between IMGC and NBS

Anna Peuto¹, Richard S Davis²

¹Istituto di Metrologia "G. Colonnetti," Strada delle Cacce 73, 10135 Turin, Italy.

Journal of Research of the National Bureau of Standards (1977)

|September 27, 2021

Abstract:

Solid-object density standards developed independently by the Istituto di Metrologia "G. Colonnetti" (IMGC) and NBS, and traceable to SI units of length and mass, have been compared using a silicon transfer standard. Results agree to approximately 1×10^-6, which is conistent with the uncertainties assigned by the two laboratories.

Keywords:

International System of Units density standards hydrostatic weighing international comparison silicon volume standards

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