Abstract
The author considers issues covered by A.B. Blank in his letter “Uncertainty in Measurements and Chemical Analysis” published in Zhurnal Analiticheskoi Khimii in 2005 (vol. 60, no. 12, p. 1316). It is noted that the negative attitude towards the introduction of the measurement uncertainty concept is to a great extent due to the incorrect translation of the term “uncertainty” as “pogreshnost’” (error) in the guides published in Russian earlier. It is shown that the estimation of uncertainty, which combines both random and so-called “systematic” error components, is consistent with the structure of the error of measurements (determinations) made by following specified procedures. Reporting of the results together with their uncertainties is necessary for the proper interpretation of the experimental data; this reflects current trends in the analytical quality assurance based on metrological principles.
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