Amount of substance and the proposed redefinition of the mole

There has been considerable discussion about the merits of redefining four of the base units of the SI, including the mole. In this paper, the options for implementing a new definition for the mole based on a fixed value for the Avogadro constant are discussed. They are placed in the context of the...

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Bibliographic Details
Published in:Metrologia 2009-06, Vol.46 (3), p.332-338
Main Authors: Milton, M J T, Mills, I M
Format: Article
Language:English
Subjects:
Gases
Measurement
Uncertainty
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Summary:There has been considerable discussion about the merits of redefining four of the base units of the SI, including the mole. In this paper, the options for implementing a new definition for the mole based on a fixed value for the Avogadro constant are discussed. They are placed in the context of the macroscopic nature of the quantity amount of substance and the opportunity to introduce a system for molar and atomic masses with unchanged values and consistent relative uncertainties. [PUBLICATION ABSTRACT]
ISSN:0026-1394
1681-7575
DOI:10.1088/0026-1394/46/3/022