How to read a fabric test report without guessing
A test report is a production decision document, not paperwork. The point is to separate results that need a fabric replacement from results that only need a process adjustment.
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How it works
1.Start with mass and construction
GSM, ends/picks or courses/wales and yarn count confirm you received the fabric you approved. A GSM deviation over 5% changes consumption, drape and cost.
2.Read dimensional stability next
Shrinkage in length and width drives pattern compensation. Compensate in the pattern only when the result is repeatable across lots; otherwise fix the finishing.
3.Then colour fastness
Wash, rub (dry/wet), perspiration and light fastness. Wet rub below grade 3 on dark shades predicts customer complaints and staining in packing.
4.Finally durability
Pilling, bursting or tensile strength and seam slippage tell you whether the garment survives real wear. These are usually fabric-level failures that cannot be corrected in sewing.
Quick reference
- GSM tolerance
- ±5% of approved value
- Wash fastness target
- Grade 4 or better
- Wet rub target
- Grade 3–4 minimum on darks
- Pilling target
- Grade 3–4 after 5,000 rubs
Checks you can run this week
- Match every report to the specific dye lot and roll numbers received.
- Reject the lot when shrinkage varies more than 1% between rolls.
- Keep a retained swatch with the report for claim traceability.
Free downloads for this topic
Print-ready A4 PDF sheets from the NOSK.space garment media library — free of charge, no sign-up.
Denim 3/1 twill swatch card
Twill line diagram with weight in oz and g/m2, stretch ranges for elastane denim, shrinkage expectations and jeans-point needle sizes.
Free studies and toolkits that use this
This explainer supports the following NOSK.space learning paths and toolkits — all free of charge, with no payments and no paywalls.
Free learning · Foundation
Garment Quality FoundationsInspection systems, defect classification, AQL decisions and corrective action from first principles.
Free learning · Advanced
Standards & Compliance MasterySocial, chemical and product-safety compliance: audit readiness, evidence packs and supplier governance.
Free toolkit
AQL Inspection ToolkitSampling tables, defect tally sheets and a lot-disposition worksheet ready for final random inspection.
Free toolkit
Audit Readiness BinderA structured evidence index for social, chemical and quality audits, with owner and review columns.
Real contacts for this topic
Factories, mills, suppliers, buyers and industry bodies from the free NOSK.space garment directory that work directly with how to read a fabric test report without guessing. Every detail below is published on the organisation's own site and each link opens that site — free of charge, no introductions sold, no commission taken.
Vardhman Textiles Limited
Ludhiana · India
Cotton and blended yarn, greige and finished fabric, sewing thread
- Address
- Vardhman Premises, Chandigarh Road, Ludhiana 141 010, Punjab, India
- Phone
- +91 161 2228943
Arvind Limited
Ahmedabad · India
Denim, woven shirting and garment manufacturing
- Address
- Naroda Road, Ahmedabad 382 345, Gujarat, India
- Phone
- +91 79 6826 8000
- investor@arvind.in
Coats Group plc
London · United Kingdom
Industrial sewing thread, zips and performance materials
- Address
- 4th Floor, 14 Aldermanbury Square, London EC2V 7HS, United Kingdom
Marks & Spencer
London · United Kingdom
UK retailer publishing clothing supplier and factory information
- Address
- Waterside House, 35 North Wharf Road, London W2 1NW, United Kingdom
- Phone
- +44 20 7935 4422
TEXPROCIL — The Cotton Textiles Export Promotion Council
Mumbai · India
Cotton yarn, fabric and made-ups export promotion
- Address
- Engineering Centre, 5th Floor, 9 Shrimad Rajchandraji Marg, Charni Road, Mumbai 400 004, India
- Phone
- +91 22 4944 4000
- info@texprocil.org
Where this fits in sourcing
This topic is used at the following stages of the free NOSK.space sourcing guide, which links each decision to the questions to ask and the real organisations to approach.
- Stage 1: Fabric and fibre selection
Fix the construction and test requirements before you ask for a price.
Common questions
- Which failure can be fixed in the factory?
- Repeatable shrinkage and mild skew can be absorbed by pattern and spreading changes. Fastness and strength failures cannot — replace the fabric.
- Do I need to pay for these templates?
- No. Everything on NOSK.life, including the checklists behind these explainers, is free of charge.
Finished this explainer?
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Jobs this knowledge leads to
Real garment industry roles that hire for exactly this skill, with the employers that recruit them. Free to browse — no fees, no commission.
Quality & compliance · Senior
Quality Assurance Manager
Owns the quality system: AQL policy, audit readiness, needle control, root cause and the buyer's technical relationship.
Open the role guidePattern, CAD & sampling · Mid level
Fabric Technologist
Approves fabric against the buyer's standard and prevents shading, shrinkage and performance failures reaching the line.
Open the role guideSustainability & chemical management · Mid level
Sustainability & Chemical Compliance Officer
Runs the chemical inventory, environmental data and traceability evidence buyers now audit as hard as quality.
Open the role guide
More free media
- Woven vs knit: how fabric construction changes everything
Warp and weft versus loops and courses — why the same fibre behaves completely differently once it is woven or knitted.
- From measurement chart to pattern block
How ease, tolerances and body measurements turn into a first pattern — and where fit problems are actually created.
- Marker efficiency: where fabric cost is really decided
How marker planning, spreading and ply management move consumption by several percent — and what that means per order.