A material sample is ready for prototype review when it can be evaluated through a relevant method—prototyping, laboratory testing, or validation testing—and reviewers have identified specifications against which the findings can be compared. The American Society for Quality (ASQ) lists these methods for evaluating supplier samples, while the U.S. International Trade Administration says that a sample may be tested against the specifications identified in the original request.
Readiness for review does not mean that the sample has passed. It means the sample is ready for evaluation and that there is a stated basis for judging the results.
How to check readiness
1. Identify the applicable specifications
Locate the specifications the sample is expected to satisfy. In the commercial-availability context described by the U.S. International Trade Administration, testing can be used to assess whether a sample meets the specifications identified in the original petition.
That example supports specification-based testing, but it does not establish that the same petition or process applies to every material project. If no specification basis has been defined, clarify that gap before treating the review as conclusive.
2. Select the relevant evaluation method
ASQ identifies prototyping, laboratory testing, and validation testing as evaluation methods for supplier samples. It does not indicate that every sample requires every listed method.
Choose the method that addresses the question the prototype review needs to answer, then apply the corresponding specifications to the findings. For a clear internal review record, distinguish the specification used, the evaluation method, and the resulting observations.
3. Separate the result from the review status
A sample may be ready for prototype review even though the evaluation later shows that it does not meet the applicable specifications. Record “ready for review” as the status before evaluation, not as an acceptance decision.
What you must still confirm
The cited guidance does not establish a universal sample quantity, specimen condition, test duration, tolerance, reporting format, or approval threshold. Before treating a sample as ready, confirm the details that apply to the project:
- The exact specification and its current version
- The required evaluation method and test conditions
- The quantity and condition of material needed
- The evidence required for an acceptance decision
- Any additional customer, contractual, or regulatory requirements
Those details must come from the controlling project documents and the responsible reviewer; they should not be inferred from the general evaluation methods described above.
In short, the supported readiness check is straightforward: there must be an appropriate evaluation route and an identified specification basis. Whether the sample actually meets the requirements can only be determined from the evaluation results.