https://doi.org/10.1351/goldbook.10019
Realization of the definition of a given nominal property, with stated nominal property value and associated examination uncertainty, used as a reference.
Example: A given examined value for a bacterial taxon can be compared for equivalence with the stated nominal property value of an examination standard in the form of typical bacteria of the species.
Note: A "realization of the definition of a given nominal property" can be provided by an examining system or a nominal reference material.