rus
Issue #2/2024
V. V. Stepanovskikh
Metrological Traceability of Measurement Results of Metallurgical Materials Chemical Composition. Practical Questions
Metrological Traceability of Measurement Results of Metallurgical Materials Chemical Composition. Practical Questions
https://doi.org/10.22184/2227-572X.2024.14.2.184.186
The results obtained in metallurgy, mechanical engineering, geology, etc. when analyzing matrix materials are expressed in relative units – the mass fraction of the corresponding element or compound (kg/kg, percentage, etc.). In accordance with the measurement algorithm, the results are traced to the SI unit of mass kilogram.
The metrological characteristics of laboratory balances are important when assessing the uncertainty of the analytical result. It is shown that their calibration is preferable to verification.
Calibration of universal-purpose analytical instruments is carried out individually with each batch of samples. Accuracy control procedures using CRMs, performed on a regular basis in measurement procedures, confirm the metrological traceability of results. The need for annual verification of analytical instruments in this case seems inappropriate and redundant.
The results obtained in metallurgy, mechanical engineering, geology, etc. when analyzing matrix materials are expressed in relative units – the mass fraction of the corresponding element or compound (kg/kg, percentage, etc.). In accordance with the measurement algorithm, the results are traced to the SI unit of mass kilogram.
The metrological characteristics of laboratory balances are important when assessing the uncertainty of the analytical result. It is shown that their calibration is preferable to verification.
Calibration of universal-purpose analytical instruments is carried out individually with each batch of samples. Accuracy control procedures using CRMs, performed on a regular basis in measurement procedures, confirm the metrological traceability of results. The need for annual verification of analytical instruments in this case seems inappropriate and redundant.
Теги: calibration certified reference materials measurements of chemical composition measurement techniques reliability of measurement results verification of measuring instruments градуировка достоверность результатов измерений калибровка определение химического состава сертифицированные стандартные образцы
Metrological Traceability of Measurement Results of Metallurgical Materials Chemical Composition. Practical Questions
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