AQL 2.5: What This Quality Standard Means for Your Garment Production

Key Takeaways

• AQL 2.5 permits a maximum of 2.5% defective items in a random sample from your production batch.
• Defects are classified into three severity levels: Critical, Major, and Minor — each with its own tolerance.
• Sample size is determined by your total order quantity using standardized AQL sampling tables.
• AQL 2.5 is the industry-standard baseline for knitwear and apparel quality control.

AQL (Acceptable Quality Level) is the international standard for product inspection in the textile industry. Understanding AQL 2.5 is essential for any brand sourcing knitwear. This guide explains how AQL 2.5 works and what it means for your orders.

What Is AQL 2.5?

AQL 2.5 means that in a random sample from your production batch, a maximum of 2.5% of items can have defects while still passing inspection. This is the standard for most textile and apparel products.

How AQL Inspection Works

1. Sample Size Determination

The number of items inspected is based on your total order quantity:

Order Quantity	Sample Size	Accept (≤ defects)	Reject (≥ defects)
2-150	20	1	2
151-500	32	2	3
501-1200	50	3	4
1201-3200	80	5	6
3201-10000	125	7	8
10001-35000	200	10	11

2. Defect Classification

Defects are categorized by severity:

Critical Defects (zero tolerance)

• Safety issues (sharp objects, chemicals)
• Missing labels required by law

Major Defects

• Incorrect measurements beyond tolerance
• Visible color variation
• Broken/malfunctioning components
• Stitching defects affecting structural integrity
• Contamination or stains

Minor Defects

• Loose threads
• Slight color variation within tolerance
• Minor finishing imperfections
• Slight puckering

For AQL 2.5, major defects are the primary measure.

3. Random Sampling

Items are randomly selected from the production batch. The inspector must not allow the manufacturer to choose which items are inspected.

Why AQL 2.5 Matters for Knitwear

Knitwear has unique quality considerations:

• Stitch integrity: A dropped stitch can unravel a garment
• Tension consistency: Uneven tension affects fit and appearance
• Shape retention: Knitwear stretches; proper finishing is critical
• Color consistency: Across different dye lots
• Linking quality: Seam finishing affects durability

Beyond AQL: Our Quality Process

At JIERQI Clothing, AQL 2.5 is our baseline, not our ceiling. Our quality system includes:

1. In-line inspection during production
   • Raw material inspection upon arrival
   • First-piece approval before bulk production
   • In-process inspection at critical stages
2. Pre-shipment inspection (AQL 2.5)
   • 100% garment checking for visible defects
   • Random sample measurement verification
   • Packing and labeling verification
3. Continuous improvement
   • Defect tracking and trend analysis
   • Supplier performance scoring
   • Regular quality reviews with factory partners

Questions to Ask Your Manufacturer

• What AQL level do you use for knitwear?
• Can you provide inspection reports with each shipment?
• How do you handle rejected items?
• Do you have in-line inspection or only final inspection?
• Can clients arrange third-party inspections?

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Quality is built into every step of our process. Contact us to learn more about our quality assurance system.