Determine sample size code letters and accept/reject criteria based on verified public military standards.
Client-Side Privacy Guarantee
The data you enter is processed in your browser and is not uploaded. Ads and analytics are provided by Google separately.
How does Acceptance Quality Limit (AQL) determine sample size and accept/reject numbers?
Under ANSI/ASQ Z1.4 and ISO 2859-1, lot size N and Inspection Level (typically Level II Normal) index into a Sample Size Code Letter (A through R). That letter specifies exact inspection sample size n and maximum allowable defects Ac before the lot must be rejected at Re = Ac + 1.
Accept lot if defects ≤ Ac; Reject lot if defects ≥ Re
K
MIL-STD-105E Index125
Inspect randomly3
Max allowable defects4
Reject lot if ≥ ReAcceptance sampling provides statistical confidence that incoming supplier shipments or outgoing finished goods lots meet contractual quality standards without incurring the massive expense of 100% destructive or manual sorting.
Generate mathematically defensible inspection plans with complete OC, AOQ, AOQL, and ATI curves.
Statistical Process Control (SPC)Track defect rates across varying production lot sizes while accounting for overdispersion.