3. What does the standard require in terms of validating test methods and estimating measurement uncertainties?

3.1 Validation definitions

VIM gives the following definition: "verification, where the specified requirements are adequate for a given use".

ISO/IEC 17025 states that "validation is the confirmation by examination and the provision of objective evidence that the particular requirements for a specified intended use are fulfilled".

These definitions require :

• setting requirements in the form of acceptability criteria relating to accuracy and precision;

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