An inspection is only as good as its plan, sample and decision criteria. Photographs alone do not provide a measurable release basis.
1. Define the inspection basis
The inspector needs the approved specification, drawings, limit samples, packaging requirements and clear defect classes. Ambiguous requirements cannot be interpreted reliably at the factory.
- Approved specification revision
- Measurement methods and tolerances
- Critical, major and minor defects
2. Sample and production status
Usually, you determine the sample from lot size and inspection level under AQL (ISO 2859-1), taking the risk into account. Also check whether the ordered quantity is fully produced and a sufficient proportion is packed.
- Lot size, inspection level and AQL limits
- Production and packing status
- Random selection across cartons
3. Measurable findings
The inspector checks quantity, dimensions, function, workmanship, labelling and packaging against the agreed criteria. Every deviation needs a clear description and evidence.
- Measurements rather than general statements
- Photographs linked to inspection points
- Defect counts by class
4. Release and follow-up
The report should clearly state pass, fail or conditional release. For deviations, agree rework, re-inspection and responsibility before shipment.