Engineering Tools
AQL Sampling Plan Lookup
Lot size → sample size, accept and reject numbers per ISO 2859-1 / ANSI Z1.4.
Calculator
- Code letter (from lot size)
- K
- Sample size to inspect
- 125
- Accept if defects ≤ (Ac)
- 7
- Reject if defects ≥ (Re)
- 8
Notes
Single sampling, normal inspection, general inspection levels I–III. AQL 2.5 does not mean inspecting 2.5% of the lot: the table sets both sample size and acceptance number. Critical (safety) defects are usually AQL 0: any one rejects the lot. Reference only; verify against the standard text for contractual use.
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