Final textile quality inspection is conducted to ISO 2859-1 (ANSI/ASQ Z1.4) at General Inspection Level II — the industry standard for retail and hospitality programmes — using three AQL thresholds: AQL 1.0 for critical defects (zero accepted), AQL 2.5 for major defects (visible to consumer, likely returned), and AQL 4.0 for minor defects (cosmetic only). For a shipment of 3,200 units, the inspector randomly selects 125 units; if more than 7 major defects are found in that sample, the lot FAILS and shipment is blocked. Lab testing — colour fastness (ISO 105), dimensional stability (ISO 6330), tensile strength (ISO 13934), pH, formaldehyde, and restricted substances (REACH) — is conducted separately and verifies performance claims that visual inspection cannot detect.
AQL Inspection Methodology
The internationally accepted standard for textile final inspection is ISO 2859-1 (also published as ANSI/ASQ Z1.4), commonly called AQL inspection. AQL stands for Acceptable Quality Limit — the maximum percentage of defective units considered acceptable for that product category.
| AQL level | Defect type | Typical application |
|---|---|---|
| AQL 1.0 | Critical defects | Safety hazards, choking risks (childrenswear), mislabelling that breaches law |
| AQL 2.5 | Major defects | Defects a customer would likely return — holes, stains, wrong colour, broken seams |
| AQL 4.0 | Minor defects | Cosmetic imperfections unlikely to affect function or immediate return rate |
The sample size is determined by the lot size and the inspection level (typically General Inspection Level II). A shipment of 3,200 units inspected to GIL II requires a sample of 125 units. If the number of major defects in the sample exceeds the acceptance number for AQL 2.5, the lot FAILS.
Lab Testing Requirements
Lab testing verifies the chemical and physical performance of the product against the specification and the target market's regulatory requirements. It is distinct from visual inspection — a product can pass visual inspection and fail lab testing, or vice versa.
| Test | Why required | Common standard |
|---|---|---|
| Colour fastness | Dye stability in washing, rubbing and light | ISO 105 series |
| Dimensional stability | Shrinkage after washing | ISO 6330 / AATCC 135 |
| Tensile & seam strength | Structural integrity | ISO 13934 / ASTM D5035 |
| pH value | Skin safety; limits set by OEKO-TEX and REACH | ISO 3071 |
| Formaldehyde content | EU REACH, Japan Law 112 limits | ISO 14184 |
| Azo dyes / heavy metals | EU REACH restricted substances | ISO 14362 / EN ISO 17075 |
| Flammability | US CPSC 16 CFR 1610 (apparel), 1632/1633 (mattress) | CPSC standards |
Certification Verification
Certification claims on products (GOTS, OEKO-TEX, GRS, BCI) must be verified against the issuing body's public database — not against a PDF certificate provided by the factory. Certificate PDFs can be outdated, altered or simply false. Every credible certification body maintains a searchable online database.
- GOTS: search at global-standard.org — verify factory name, product types covered, certificate validity date.
- OEKO-TEX STANDARD 100: verify at oeko-tex.com/en/our-standards/oeko-tex-standard-100/label-check.
- GRS: verify at textileexchange.org — check facility name and certificate scope.
- BSCI/amfori: verify at amfori.org — check latest audit result and date.
- Sedex SMETA: buyers registered on Sedex can access audit results directly on the Sedex platform.
MZ Global Trading conducts third-party AQL inspections through accredited inspection bodies (SGS, Bureau Veritas, Intertek) on all commercial shipments. Inspection reports are shared with buyers within 24 hours of inspection completion.
MZ Global Trading's quality control system integrates AQL inspection and lab testing at every commercial shipment. Specify your AQL levels, required tests and certification requirements via the sourcing RFQ form.
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Disclaimer: This content is provided for general information only and does not constitute legal, customs or compliance advice. Always verify requirements against your buyer specification, applicable regulations and your destination market before making commercial decisions.