Quality Control Starts Before Production
Good quality is built into a garment long before the final inspection. It starts with approved fabrics and trims, clear tech packs, and a pre-production sample that locks every detail. Factories with strong quality systems check materials on arrival and verify the first pieces off the line before full production begins.
In-Line Inspections
During production, quality teams inspect garments at each stage — cutting, stitching, and finishing. In-line checks catch problems early: a misaligned print, a faulty seam, or a shading variation in the fabric. Fixing an issue when 200 pieces are sewn is a minor correction; discovering it in 10,000 finished pieces is a crisis. Ask your manufacturer how often in-line inspections happen and what they cover.
What Is AQL?
AQL stands for Acceptable Quality Limit. It is the international standard (ISO 2859) for inspecting bulk production. Instead of checking every single piece — which is slow and expensive — inspectors examine a statistically valid random sample and apply clear pass/fail criteria.
Understanding AQL Levels
Defects are classified into three categories:
- Critical defects — safety issues, such as broken needles or sharp points. The acceptable limit is zero.
- Major defects — flaws a customer would notice and return, such as holes, stains, or wrong measurements. Commonly inspected at AQL 2.5.
- Minor defects — small imperfections that do not affect use, such as a loose thread. Commonly inspected at AQL 4.0.
For a typical order of 5,000 pieces at standard inspection levels, an inspector might check around 200 pieces. If major defects exceed the allowed number for the chosen AQL, the shipment fails and must be reworked and re-inspected.
Common Defects to Watch For
- Measurement deviations beyond tolerance.
- Shading differences between panels or pieces.
- Stitching defects: skipped stitches, puckering, uneven seams.
- Print and embroidery flaws: misregistration, cracking, loose threads.
- Dirty marks, holes, or fabric flaws.
Final Inspection and Shipping
The final inspection happens when at least 80% of the order is packed. Nothing ships until the inspection passes. Many brands also use independent third-party inspection companies for an unbiased verdict — reputable manufacturers welcome this. Clear quality standards, agreed in writing before production, protect both you and your factory.