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Sampling plan

A predefined method for determining how many units to inspect and the acceptance criteria used for lot disposition.

Definition and context

Sampling plans balance risk, speed, and cost by checking representative units instead of every piece.

A strong plan prevents arbitrary inspection decisions and keeps supplier-buyer expectations aligned.

Core elements

Plans typically define inspection level, sample size code, acceptance/rejection numbers, and defect classification.

They should also specify handling rules for borderline results and repeat sampling conditions.

Risk alignment

More stringent plans are applied to high-risk products, new suppliers, or unstable processes.

As supplier capability improves, teams may adjust strategy while preserving customer protection.

Where this term fits in the workflow

Sampling plan is usually shown in the inspection and sampling.

Terms used when teams decide what to inspect, how much to sample, and whether a lot can ship.

What is KaizenQ?

KaizenQ helps factory teams record inspection results, defect photos, and notes in one report shared with the office.

Learn more
KaizenQ inspection report preview

Key takeaways

  • Sampling plans create consistent, risk-based lot decisions.
  • They must align with defect severity and customer expectations.
  • Digital workflows reduce interpretation errors in the field.

Practical guides

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