Verification

provision of objective evidence that a given item fulfils specified requirements EXAMPLE 1:Confirmation that a given reference material as claimed is homogeneous for the quantity value and measurement procedure concerned, down to a measurement portion having a mass of 10 mg. EXAMPLE 2:Confirmation that performance properties or legal requirements of a measuring system are achieved. EXAMPLE 3:Confirmation that a target measurement uncertainty can be met. Note 1 to entry: When applicable, measurement uncertainty should be taken into consideration. Note 2 to entry: The item may be, for example, a process, measurement procedure, material, compound, or measuring system. Note 3 to entry: The specified requirements may be, for example, that a manufacturer's specifications are met. Note 4 to entry: Verification in legal metrology, as defined in VIML, and in conformity assessment in general, pertains to the examination and marking and/or issuing of a verification certificate for a measuring system. Note 5 to entry: Verification should not be confused with calibration. Not every verification is a validation (3.9). Note 6 to entry: In chemistry, verification of the identity of the entity involved, or of activity, requires a description of the structure or properties of that entity or activity.