Quality inspection is not just about checking parts at the end.
A reliable inspection process starts with defining the correct sampling strategy from the beginning.
At ZENTIOR, one important point we evaluate before shipment is the relationship between:
✔️ Lot size
✔️ Inspection level
✔️ AQL criteria
✔️ Critical vs major vs minor defects
Many companies request “100% inspection” without considering whether the inspection plan itself is statistically relevant or economically realistic.
For example:
A production lot of 500 pcs and a lot of 50,000 pcs should not follow the same sampling quantity.
Critical dimensions may require tightened inspection levels or capability validation.
Cosmetic defects and functional defects should never share the same acceptance criteria.
Using appropriate AQL standards allows balancing:
📌 Risk for the customer
📌 Production efficiency
📌 Detection probability
📌 Inspection cost
Typical examples:
Critical defects → AQL 0.0 / very strict control
Major defects → AQL 1.0–1.5
Minor defects → AQL 2.5–4.0
But the correct values always depend on:
part function
industry requirements
process stability
supplier maturity
final application risk
At ZENTIOR, we define inspection requirements before production starts — not after quality issues appear.
Because effective quality control is built on process definition, not only final sorting.
🌐 ZENTIOR
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