AQL chart for Garments Quality Inspection

AQL Audit
AQL is Acceptable Quality Limit or Acceptable Quality Level (AQL), a sampling of quality audit or inspection system, use for quality audit or inspection process in Garments industry. AQL sampling information shows in an AQL chart, QC use for in Quality Audit when 100% quality inspection is not possible.  AQL inspection use in Fabrics roll sampling, trims inspection, cutting panel inspection, Sewing, Finishing and Final Inspection.  Though there is 100% inspection also available in sewing and finishing but AQL audit is done for checking quality control process. There is various type of AQL sampling plan in the world, I given most commonly using 3 types AQL chart.

Uses of AQL Audit in Garments Industry

1.      Fabrics Roll sampling for inspection

2.      Trims and Accessories inspection

3.      Cutting panel inspection

4.      Sewing Quality Audit

5.      Finishing Quality Audit

6.      Finishing inline inspection

7.      Pre-final Inspection

8.      Final inspection

AQL chart

AQL chart need in Garments industry to do quality inspection, lot by lot AQL Audit. AQL chart systems are like 1.0, 1.5, 2.5, 4.0.

AQL chart for Garments inspection

AQL-4.0

As per above AQL chart, if lot size 4000 then audit quantity will be 80 pcs. Major defects quantity among audit quantity 5 or less than 5 will be passed or more than 5 defects will be failed or rejected in Audit.

AQL-2.5

1. Suppose we follow AQL 2.5.  As per above AQL chart, if lot size 4000 then audit quantity will be 80 pcs. Major defects quantity among audit quantity 5 or less than 5 will be passed or more than 5 defects will be failed or rejected in Audit.
2. Suppose we follow AQL 2.5.  As per above AQL chart, if lot size 12500 then audit quantity will be 125 pcs. Major defects quantity among audit quantity 7 or less than 7 will be passed or more than 7 defects will be failed or rejected in Audit.

AQL-1.5

Suppose we follow AQL 1.5.  As per above AQL chart, if lot size 4000 then audit quantity will be 80 pcs. Major defects quantity among audit quantity 2 or less than 2 will be passed or more than 2 defects will be failed or rejected in Audit.

AQL Audit system in Garments industry

First of all check lot quantity. As per AQL Audit requirement, auditor pick audit/ sample quantity randomly from every lot, like a lottery. Then auditor checks garments from picked sample quantity and count defect. If defect quantity exceed acceptable limit, audit result is “failed” or “rejected” that inspected lot.

Why we need AQL Audit

When you want to check quality inspected goods or you do not have time to check 100% goods you can do AQL audit. Final inspection is done in AQL Audit; factories have internal AQL audit system. To check supplier’s fabrics and Trims quality, you need AQL audit in suppliers Raw materials. Sewing end line and operator bundle wise AQL audit also done in apparel industry.