Definitions of Metrology terms & phrases.
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(laboratory) Determination of the testing capability of a laboratory, by comparing tests performed between laboratories.
Laboratory that performs internationally adopted fundamental metrological research and which realises and maintains standards at the highest international level.
A method of the highest metrological quality which when implemented can be described and understood completely, and for which a complete uncertainty budget can be provided in SI units, the results of which can therefore be accepted without reference to a standard for the magnitude being measured.
Primary reference material
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
Principle of measurement
The scientific foundation of a method of measurement.
Physikalisch-Technische Bundesanstalt, the national metrological institute of Germany.
Proficiency testing schemes