AQL

acceptable quality limit

The worst tolerable process average for sampling inspection, in percent nonconforming. Together with the lot size and inspection level it gives a sampling plan: sample size n, acceptance number Ac and rejection number Re (ISO 2859-1, ANSI Z1.4).

Calculate it

AQL Sampling Plan: Sample size, Ac / Re numbers and OC curve from lot size and AQL.

Related terms

• RPN and action priority: FMEA risk ranking