--- title: "AQL Quality Control: Bangladesh Garment Factories" description: "AQL quality control in Bangladesh garment factories: inspection levels, sampling tables, defect classification, and how to reduce rejection rates." canonical: "https://taeen.com.bd/blog/aql-quality-control-bangladesh-garment-factory" breadcrumb: ["Home", "Blog", "AQL Quality Control: Bangladesh Garment Factories"] author: "Tanvir Ahmed Khan" published: "July 20, 2026" updated: "July 20, 2026" tags: ["Quality Control", "buying house Bangladesh", "apparel sourcing"] --- Quality Control # AQL Quality Control: Bangladesh Garment Factories By TAEEN TeamJuly 20, 202614 min read ![AQL Quality Control: Bangladesh Garment Factories](https://taeen.com.bd/_next/image?url=%2Fimages%2Fblog%2Faql-quality-control-bangladesh-garment-factory.webp&w=3840&q=75) **Quick Answer:** AQL (Acceptable Quality Limit) quality control in Bangladesh garment factories uses ISO 2859-1 sampling tables with standard levels of AQL 2.5 for major defects and AQL 4.0 for minor defects on most garment orders. Inline inspections are conducted at 20–50% production completion, and final inspections at 80–100% completion. A typical inline or final inspection in Bangladesh costs $150–$300 per man-day. Properly implemented AQL systems reduce shipment rejection rates from 15–25% to under 3%, protecting buyer margins and brand reputation. For a comprehensive overview, see our [buying house in Bangladesh — complete guide](https://taeen.com.bd/) guide. Quality control is the highest-stakes phase of garment sourcing from Bangladesh. A single undetected quality issue can result in container rejections, chargebacks, returns, and lasting brand damage. AQL (Acceptable Quality Limit) is the internationally standardised framework that governs how garment inspections are conducted — and understanding it is non-negotiable for any buyer sourcing from Bangladesh. This guide explains how AQL quality control works specifically within the Bangladesh garment factory ecosystem: the sampling tables, defect classification systems, inspection protocols, and practical strategies to reduce quality failures. For the broader QC framework, see our [quality control in apparel sourcing guide](https://taeen.com.bd/blog/quality-control-apparel-guide). For pre-shipment protocols, see our [pre-shipment inspection guide](https://taeen.com.bd/blog/pre-shipment-inspection-bangladesh). ## What Is AQL and How Does It Work? AQL is a statistical sampling method defined in ISO 2859-1 that determines how many units to inspect in a production lot and what defect count is acceptable for that lot to pass inspection. It does not mean “zero defects” — it means that the defective rate in the inspected sample must fall below a defined threshold. ### The three defect categories Every garment defect in AQL is classified into one of three categories: - **Critical defects:** Defects that pose a safety hazard or render the garment unusable (e.g., sharp objects in garment, broken needles, exposed blades). **AQL level: 0.0** — zero tolerance. - **Major defects:** Defects that would cause a customer return or rejection (e.g., wrong shade, open seams, misaligned prints, size measurements out of tolerance). **Standard AQL: 2.5** - **Minor defects:** Defects unlikely to cause a return but below quality expectations (e.g., minor shade variation, loose thread trim, slight puckering). **Standard AQL: 4.0** ## AQL Sampling Tables for Bangladesh Garment Factories The AQL sampling table determines sample size based on lot size (total production quantity). Here are the standard tables used in Bangladesh garment QC: | Lot Size (pieces) | Sample Size | AQL 2.5 (Major) | AQL 4.0 (Minor) | | --- | --- | --- | --- | | 2–8 | 2 | 0 reject | 0 reject | | 9–15 | 3 | 0 reject | 0 reject | | 16–25 | 5 | 0 reject | 1 reject | | 26–50 | 8 | 0 reject | 1 reject | | 51–90 | 13 | 1 reject | 2 reject | | 91–150 | 20 | 1 reject | 3 reject | | 151–280 | 32 | 2 reject | 3 reject | | 281–500 | 50 | 3 reject | 5 reject | | 501–1,200 | 80 | 5 reject | 7 reject | | 1,201–3,000 | 125 | 7 reject | 10 reject | | 3,001–10,000 | 200 | 10 reject | 14 reject | | 10,001–35,000 | 315 | 14 reject | 21 reject | | 35,001–150,000 | 500 | 21 reject | 21 reject | ## What Does AQL Quality Control Cost in Bangladesh? | Inspection Type | Typical Cost | Duration | When Conducted | | --- | --- | --- | --- | | Inline inspection | $150–$250/day | 4–8 hours | 20–50% production | | Final inspection | $200–$300/day | 6–10 hours | 80–100% complete | | Pre-shipment inspection (PSI) | $200–$350/day | 6–12 hours | Packing stage | | Container loading supervision | $150–$250/day | 4–8 hours | At port/warehouse | | Lab testing (per fabric) | $50–$150/test | 3–7 days | Pre-production or inline | A third-party inspection company (e.g., SGS, Bureau Veritas, Intertek) charges $250–$500 per man-day in Bangladesh. A buying house with its own QC team typically charges $150–$250 per man-day, which is why working with a [full-service buying house](https://taeen.com.bd/blog/bangladesh-buying-house-list) is often more cost-effective for mid-size buyers. ## How to Conduct Inline AQL Inspections in Bangladesh? Inline inspection is the most critical QC intervention in Bangladesh garment production. It catches defects while corrective action is still possible, preventing defective garments from progressing to finishing and packing. A standard inline inspection protocol in a Bangladesh garment factory covers: 1. **First output check (30 minutes):** Inspect the first 10–15 pieces off each sewing line against the approved sample and tech pack measurements. 2. **Line-end check (ongoing):** Inspect finished garments at the end of the line before they enter finishing. Check seam strength, stitch density, and measurement compliance. 3. **Mid-production audit (4–6 hours):** At 20–50% completion, pull random samples per AQL table and inspect against the buyer’s QC manual. Document all defects with photographs. 4. **Corrective action follow-up:** Present defect findings to the factory QC manager and line supervisor. Track corrective actions with re-check timelines. For factory visit protocols that complement inline QC, see our [factory visit checklist](https://taeen.com.bd/blog/factory-visit-checklist-bangladesh). ## What Are the Most Common Defects in Bangladesh Garment Factories? Based on field data from Bangladesh garment QC inspections, the most frequent defect categories are: | Defect Type | Category | Frequency | Root Cause | | --- | --- | --- | --- | | Open/loose seam | Major | 25–35% | Operator speed, machine tension | | Measurement out of tolerance | Major | 15–20% | Pattern grading, cutting accuracy | | Shade variation | Major | 10–15% | Fabric lot mixing, dyeing inconsistency | | Stain/oil mark | Major | 8–12% | Machine oil, handling, warehouse | | Print/embroidery defect | Major | 5–10% | Screen alignment, thread tension | | Loose thread trim | Minor | 20–30% | Insufficient trimming operators | | Needle mark | Minor | 5–8% | Incorrect presser foot, operator technique | | Puckering | Minor | 5–10% | Thread tension, differential feed | ## How to Reduce Quality Failures in Bangladesh? Buyers can significantly reduce quality failures by implementing these strategies: - **Provide a detailed QC manual:** Include measurement charts, acceptable defect photos, and AQL levels with your tech pack. See our [tech pack guide](https://taeen.com.bd/blog/tech-pack-bangladesh-apparel-manufacturing-guide). - **Conduct proto-to-PPS validation:** Never approve bulk production based on a proto sample. Complete the full sample cycle including fit and pre-production samples. - **Request inline inspections:** Insist on at least one inline inspection at 20–30% production. Early detection prevents bulk rejection. - **Use the correct AQL level:** AQL 1.0 for premium brands, AQL 2.5 for mid-market, AQL 4.0 for value retail. Never accept “no inspection” on any order. - **Lab test fabric:** Test shrinkage, colourfastness, pilling, and GSM before cutting. Fabric defects found during cutting are 10x more expensive than fabric defects found during testing. - **Work with an experienced buying house:** A buying house with its own QC team provides ongoing factory oversight between formal inspection points. See [buying agent vs buying house](https://taeen.com.bd/blog/buying-agent-vs-buying-house-difference). ## Frequently Asked Questions ### What AQL level should I use for my Bangladesh orders? The standard recommendation is AQL 2.5 for major defects and AQL 4.0 for minor defects, with zero tolerance for critical defects. Premium brands may specify AQL 1.5 for major defects. Your QC level should be defined in the purchase order and confirmed with the factory before production starts. ### How many pieces should I inspect from a 10,000-piece order? Under AQL 2.5 Level II (the standard inspection level), a lot of 10,000 pieces requires a sample size of 200 pieces. If the inspection finds 10 or fewer major defects, the lot passes. If it finds 11 or more major defects, the lot fails and requires 100% re-inspection or rework. [All articles](https://taeen.com.bd/blog)[Get a sourcing quote](https://taeen.com.bd/contact) ## Related articles [ ![Factory Audit Bangladesh: Step by Step Process](https://taeen.com.bd/_next/image?url=%2Fimages%2Fblog%2Ffactory-audit-bangladesh-step-by-step.webp&w=1920&q=75)Quality Control July 20, 202613 min read ### Factory Audit Bangladesh: Step by Step Process Factory audit in Bangladesh step by step: pre-audit document review, on-site inspection, BSCI/SEDEX/WRAP scoring, costs, timelines, and failure areas. 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