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5 kwi 2001 · Examples of sources of uncertainty in our field are the measurement of volumes, weighing, reaction temperature, purity of reagents, and value assigned to the calibrator. Also properties of the instrument used e.g. the size and tolerance of the cuvette, if the instrument uses more than one cuvette they may be different, the wavelength etc.
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One useful measure of this is measurement uncertainty. Although the concept of measurement uncertainty has been recognised by chemists for many years, it was the publication in 1993 of the “Guide to the Expression of Uncertainty in Measurement” (the GUM) [H.2]
28 wrz 2017 · This chapter presents and explains the most used methodologies for the evaluation of measurement uncertainty in metrology with practical examples.
This suite of examples illustrates good practice in evaluating measurement uncertainty in a variety of fields including calibration, testing, comparison and conformity, and relate to sectors that include environment, energy, quality of life, industry and society.
An estimate of measurement uncertainty (MU) provides an interval of values within which the true value is believed to lie with a stated probability, and is therefore a quantitative indication of the reliability of a measurement.
1 lip 2018 · Current approaches to measurement uncertainty that use imprecision and accuracy calculation using control samples and use of EQA/PT data relate to the uncertainty of the result of the control sample itself, i.e. uncertainty of the method.
14 lip 2021 · This suite of examples illustrates good practice in evaluating measurement uncertainty in a va- riety of fields including calibration, testing, comparison and conformity , and relate to sectors
