What is the 4-point fabric inspection system?

The 4-point system (ASTM D5430) assigns penalty points based on defect size: 1 point for defects up to 3 inches, 2 points for 3–6 inches, 3 points for 6–9 inches, and 4 points for defects over 9 inches. Rolls exceeding 40 points per 100 square yards are typically rejected.

When should fabric inspection be done — before or after cutting?

Fabric inspection should always be conducted before cutting. Identifying defects in raw fabric rolls prevents them from being cut into garment pieces, which would multiply the defect across finished products and create costly waste and rework.

What fabric defects are most commonly found?

Common defects include broken or missing yarns, holes, oil stains, shade variation between rolls, uneven dyeing, weaving faults like pick bars and reed marks, and knitting defects such as dropped stitches. Shade inconsistency between dye lots is one of the most frequent issues.

How is colorfastness tested in fabric inspection?

Colorfastness is tested using standardized methods — AATCC 61 for wash fastness, AATCC 8 for rubbing (crocking) fastness, and ISO 105-B02 for light fastness. Each test rates color transfer or fading on a 1–5 gray scale, where 4 or above is generally acceptable.

How many rolls are inspected from a fabric shipment?

Typically, 10% of rolls are randomly selected for inspection, though this percentage can increase for high-risk suppliers or critical orders. Each selected roll is inspected across its full length on a fabric inspection machine under proper lighting conditions.

What is the 4-point fabric inspection system?

The 4-point system (ASTM D5430) assigns penalty points based on defect size: 1 point for defects up to 3 inches, 2 points for 3–6 inches, 3 points for 6–9 inches, and 4 points for defects over 9 inches. Rolls exceeding 40 points per 100 square yards are typically rejected.

When should fabric inspection be done — before or after cutting?

Fabric inspection should always be conducted before cutting. Identifying defects in raw fabric rolls prevents them from being cut into garment pieces, which would multiply the defect across finished products and create costly waste and rework.

What fabric defects are most commonly found?

Common defects include broken or missing yarns, holes, oil stains, shade variation between rolls, uneven dyeing, weaving faults like pick bars and reed marks, and knitting defects such as dropped stitches. Shade inconsistency between dye lots is one of the most frequent issues.

How is colorfastness tested in fabric inspection?

Colorfastness is tested using standardized methods — AATCC 61 for wash fastness, AATCC 8 for rubbing (crocking) fastness, and ISO 105-B02 for light fastness. Each test rates color transfer or fading on a 1–5 gray scale, where 4 or above is generally acceptable.

How many rolls are inspected from a fabric shipment?

Typically, 10% of rolls are randomly selected for inspection, though this percentage can increase for high-risk suppliers or critical orders. Each selected roll is inspected across its full length on a fabric inspection machine under proper lighting conditions.

Fabric Inspection

Fabric inspection is a critical step in the textile supply chain, conducted before cutting and production to identify defects in raw material that could compromise the quality of finished garments or textile products. Catching fabric flaws early prevents waste, production delays, and costly rework.

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Fabric Inspection — product quality control inspection

Key Inspection Checks for Fabric Inspection

Visual defect inspection using the 4-point grading system

Fabric weight and width verification per roll

Colorfastness testing — washing, rubbing, light exposure

Shrinkage testing against specifications

Composition and fiber content verification

Weaving or knitting defect detection — missing yarns, broken ends, holes

Shade consistency between rolls and dye lot matching

Our inspectors use the internationally recognized 4-point system to evaluate fabric rolls for weaving defects, knitting faults, dyeing irregularities, printing misalignment, and finishing inconsistencies. We verify fabric weight, width, shrinkage, colorfastness, and composition against purchase order specifications, grading colour change and staining against the gray scale.

Whether you source woven, knitted, printed, or dyed fabrics, our inspection ensures that only quality-compliant material enters your production line. Once the fabric is cut and sewn, our garment inspection services verify the finished apparel against your specifications. Detailed reports with defect mapping and photographic evidence are delivered within 24 hours.

What We See in Fabric: Insights From the Mill Floor

Using the internationally recognized 4-point grading system, our inspectors consistently find that weaving defects (broken ends, missing picks, reed marks) account for the largest share of penalty points at roughly 40%. Dyeing and finishing issues — shade variation between rolls, uneven fixation, and hand-feel inconsistencies — follow at about 30%, and are particularly problematic in reactive-dyed cotton and piece-dyed polyester blends. Shrinkage out of tolerance is a recurring issue in knitted fabrics, where relaxation and steam shrinkage can compound to exceed the 3–5% acceptable range.

Fabric inspection at the pre-production stage is the highest-ROI quality intervention in the textile supply chain. Rejecting a non-conforming roll before it enters the cutting room costs a fraction of reworking or scrapping finished garments. We recommend inspecting 100% of fabric rolls for orders under 5,000 meters, and a minimum of 10% random sampling for larger lots, always including rolls from different dye lots to catch batch-to-batch variation.

Our fabric inspection services are available through initial production check, during production inspection, pre-shipment inspection. We cover major manufacturing regions including China, India, Bangladesh, Turkey, and 30+ other countries.

Fabric Inspection Industry Standards

ASTM D5430 (4-Point System)ISO 2859-1 (AQL)AATCC 61AATCC 8ISO 6330Oeko-Tex Standard 100

Why Quality Control Matters for Fabric Inspection

Products in the fabric inspection category face rigorous quality expectations from consumers, retailers, and regulatory authorities. Defects that escape the factory can result in product returns, negative reviews, safety recalls, and significant financial losses. For brands importing from overseas manufacturers, third-party quality control inspections are the most effective way to verify product quality before committing to shipment.

Tetra Inspection provides specialized inspection services for fabric inspection, including initial production check, during production inspection, pre-shipment inspection. Our inspectors are trained in the specific quality criteria, defect patterns, and compliance requirements relevant to this industry. Each inspection follows AQL sampling standards (ISO 2859-1), with defects classified as critical, major, or minor based on your quality tolerances.

Compliance with applicable standards — such as ASTM D5430 (4-Point System), ISO 2859-1 (AQL), AATCC 61, AATCC 8 — is verified during every inspection. Our detailed photo-documented reports, delivered within 24 hours, provide the evidence you need to make informed accept-or-reject decisions, negotiate corrective actions with suppliers, and maintain a documented quality history across your supply chain.