Expression of Uncertainty in Measurement. Traceability and Uncertainty in Measurement.

Measurement Uncertainty and Traceability Issues in National and International Measurements

This paper discusses some recent laboratory intercomparisions with emphasis on the success of the uncertainty statement to include the reference value. Some factors that affect this capability are discussed. Recently developed national and international standards in the area of measurement uncertainty are presented as resources for industrial metrologists. Introduction The field of metrology ha...

Measurement uncertainty.

Measurement uncertainty is a statistical parameter which describes the possible fluctuations of the result of a measurement. It is not a mere repeatability but it is at least as high as the intra-laboratory reproducibility. If it is an attribute of a general analytical test procedure it is at least as high as the inter-laboratory reproducibility. Measurement uncertainty can be determined by the...

Role of measurement uncertainty

The method used to decide whether an instrument conforms with the requirements for legal metrology has an important impact on the accuracy that can be subsequently achieved. There are two approaches to deciding on conformity, the classical approach that does not take uncertainty directly into account, and a more modern approach that is consistent with the industrial decision rules for proving c...

The Expression of Uncertainty and Confidence in Measurement M 3003

Trends in quality in the analytical laboratory. I. Traceability and measurement uncertainty of analytical results

Credibility of analytical data has never caught the public’s eye more than today. The key principle for quality and reliability of results is comparability between laboratories and on a wider, international basis. In order to be comparable, analytical results must be reported with a statement of measurement uncertainty (MU) and they must be traceable to common primary references. This work focu...