01
What AQL does
An AQL plan sets the sample size and the accept/reject numbers for each defect class.
02
Three common mistakes
AQL 2.5 is not permission for 2.5% defective goods; defect classes use different AQLs; sampling is not 100% inspection.
03
Set it correctly
Combine safety, client tolerance, history and order risk, then confirm critical, major and minor rules before inspection.
Use note
This article supports service and quality decisions but does not replace a formal opinion for a specific product, country or order.
