Prüfzweck

Prüfzweck (German for "purpose of testing" or "objective of inspection") denotes the objective of a specific examination. It states why the test is conducted and what outcome is expected. The Prüfzweck defines the problem to be solved and the criteria against which the subject will be judged.

In practice, the Prüfzweck guides the design of the test plan, including the object of examination (Prüfgegenstand), the methods (Prüfverfahren), sampling, and the acceptance criteria. It also determines the decision rules for approving or rejecting the item under inspection. By framing the goal of the examination, the Prüfzweck helps ensure the test results are relevant and actionable.

Applications span manufacturing quality control, safety inspections, product certification, software verification, and regulatory audits. The Prüfzweck clarifies scope and performance expectations, influences required evidence, and helps ensure that results are usable for decision making. It provides a reference point to assess whether the test meets its stated objective.

Relation to other terms: The Prüfzweck is closely related to the Prüfgegenstand (subject of the examination) and to the Prüfanforderungen (inspection requirements). It should be stated clearly in test specifications or inspection plans and should be measurable and verifiable. Any change to the Prüfzweck often requires re-evaluation of the test design to maintain coherence between objectives and methods.