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IEVref:311-04-02ID:
Language:enStatus: Standard
Term: primary standard
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Definition: standard that is designated or widely acknowledged as having the highest metrological qualities and whose value is accepted without reference to other standards of the same quantity

NOTE 1 – The concept of a primary standard is equally valid for base quantities and derived quantities.

NOTE 2 – A primary standard is never used directly for measurement other than for comparison with other primary standards or reference standards.


Publication date:2001-07
Source:VIM 6.4
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