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Quality Control
AQL, ISO 2859, fabric inspection
Sampling standards, 4-point and 10-point fabric inspection, buyer-supplier quality management. How mills and brands ensure fabric meets spec.
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Essential reading
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Frequently asked questions
What is AQL?
Acceptable Quality Level. The maximum number of defective items acceptable in a random sample. Common levels: 1.0 (critical), 2.5 (major), 4.0 (minor). Defined in ISO 2859 and ANSI Z1.4.
What is the difference between 4-point and 10-point inspection?
4-point system awards 1-4 points per defect based on severity. 10-point awards 1-10. 4-point is more common globally; 10-point is sometimes preferred for premium goods.
How many defects per 100 yards are acceptable?
Depends on the buyer. Typical acceptance: 20-30 points per 100 yards for 4-point system. Premium brands may require < 10 points.
What is the AQL for a basic T-shirt?
AQL 2.5 for major defects, 4.0 for minor. Critical defects (broken stitches, holes) are 0 tolerance.
What is the difference between inline and pre-shipment inspection?
Inline (DPI) is during production for early detection. Pre-shipment (FRI) is the final gate. Pre-production (PPI) is the earliest gate, before cutting.
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