provision of objective evidence that a given item fulfils specified requirements
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 When applicable, measurement uncertainty should be taken into consideration.
NOTE 2 The item may be, e.g. a process, measurement procedure, material, compound, or measuring system.
NOTE 3 The specified requirements may be, e.g. that a manufacturer's specifications are met.
NOTE 4 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 6 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.
ANNOTATION (for Example 1) (informative) [5 June 2014] By "measurement portion" here is meant amount of material, of proper size, for measurement of any quantity of interest, removed from the reference material.