QUESTION OF CALIBRATION METHODS VALIDATION

Abstract

This article presents a comprehensive comparison of normative and technical documents on the validation of calibration methods, emphasizing their practical application in the context of accredited calibration laboratories. The aim is to provide a detailed examination of the various validation techniques that are critical for ensuring the reliability and accuracy of calibration processes. Key validation characteristics, such as trueness, precision, and measurement uncertainty, are discussed in depth, focusing on their relevance for accurate calibration results. Particular attention is given to the evaluation of the trueness characteristic of calibration methods. This is crucial for determining the closeness of the measured values to the true values, which is essential for the credibility of any measurement. The use of target measurement uncertainty is highlighted as a vital tool for assessing the reliability of calibration results and ensuring that the methods meet the required accuracy standards. In this regard, the article explores how uncertainty values are incorporated into the validation process, and how they can influence decision-making in calibration practices. Furthermore, examples are provided demonstrating the application of statistical methods for evaluating validation characteristics. These examples illustrate how statistical tools can assist in interpreting validation data, making informed decisions, and assessing the overall suitability of calibration methods for specific applications. Statistical approaches such as hypothesis testing, regression analysis, and uncertainty propagation are explored in the context of their practical use for validation. The article concludes by providing insights into the importance of ongoing validation and the role of calibration laboratories in maintaining high standards for measurement accuracy, which is fundamental for both industrial and scientific advancements.