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Published in:
2018 | OriginalPaper | Chapter
4. Metrological Traceability
Author : Ewa Bulska
Published in: Metrology in Chemistry
Publisher: Springer International Publishing
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Abstract
The measurement is a process in which the unknown quantity is compared with the known quantity, namely with a measurement standard. As discussed in the previous chapters, using the standard of the highest order is not always possible or economically justified. Thus, secondary standards can be used (standards maintained in an accredited calibration laboratory) and compared within the chain of traceability with the standard of the highest order (primary standard).