Examination standard based on a reproducible nominal property of a phenomenon or substance.
Example: For tri-dimensional shape, a crystal obtained from a solution of a pure compound.
Note: A
nominal property value of an intrinsic examination standard is assigned by consensus and does not need to be established by relating it to another examination standard of the same type.
Source:
PAC, 2018, 90, 913. 'Vocabulary on nominal property, examination, and related concepts for clinical laboratory sciences (IFCC-IUPAC Recommendations 2017)' on page 931 (https://doi.org/10.1515/pac-2011-0613)