{"id":6857,"date":"2025-11-13T12:17:12","date_gmt":"2025-11-13T04:17:12","guid":{"rendered":"https:\/\/lydenim.com\/?p=6857"},"modified":"2026-05-29T17:16:19","modified_gmt":"2026-05-29T09:16:19","slug":"denim-shrinkage-testing-7-provenfail-safe-qc-steps","status":"publish","type":"post","link":"https:\/\/lydenim.com\/th\/denim-shrinkage-testing-7-provenfail-safe-qc-steps\/","title":{"rendered":"Denim Shrinkage Testing: 7 Proven,Fail-Safe QC Steps"},"content":{"rendered":"<style id=\"ly-b2b-article-template-css\">\nbody.single-post .whb-header {\n  position: sticky !important;\n  top: 0 !important;\n  z-index: 10050 !important;\n}\nbody.single-post .whb-header,\nbody.single-post .whb-main-header,\nbody.single-post .whb-sticky-header,\nbody.single-post .whb-general-header {\n  overflow: visible !important;\n}\nbody.single-post .wd-dropdown,\nbody.single-post .wd-dropdown-menu,\nbody.single-post .wd-design-default,\nbody.single-post .wd-sub-menu,\nbody.single-post .sub-menu-dropdown,\nbody.single-post .menu-simple-dropdown .wd-dropdown {\n  z-index: 10080 !important;\n}\nbody.single-post .wd-page-content,\nbody.single-post .main-page-wrapper,\nbody.single-post .content-layout-wrapper,\nbody.single-post .wd-content-area,\nbody.single-post article.post-single-page {\n  overflow: visible !important;\n}\nbody.single-post .wd-page-title.title-blog,\nbody.single-post .post-single-page > .wd-single-post-header {\n  display: none !important;\n}\nbody.single-post .wd-content-layout.container {\n  width: 100% !important;\n  max-width: none !important;\n  padding-left: 0 !important;\n  padding-right: 0 !important;\n}\nbody.single-post .wd-content-area,\nbody.single-post article.post-single-page {\n  width: 100% !important;\n  max-width: none !important;\n}\nbody.single-post .main-page-wrapper { padding-top: 0 !important; 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width: min(1060px, calc(100% - 32px)); min-height: 0; height: auto; max-height: none; margin: 18px auto 0; }\n  .ly-b2b-content-stack, .ly-b2b-quote-panel { grid-column: auto; }\n  .ly-b2b-toc-list { grid-template-columns: repeat(4, minmax(0, 1fr)); }\n  .ly-b2b-summary-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }\n  .ly-b2b-summary-item:nth-child(2) { border-right: 0; }\n  .ly-b2b-summary-item:nth-child(-n+2) { border-bottom: 1px solid var(--ly-line); }\n  .ly-b2b-cards { grid-template-columns: 1fr; }\n}\n@media (max-width: 940px) {\n  .ly-b2b-hero-inner, .ly-b2b-layout { grid-template-columns: 1fr; }\n  .ly-b2b-quote-panel { position: static; height: auto; display: block; }\n  .ly-b2b-quote-panel img { height: auto; aspect-ratio: 5 \/ 3; }\n  .ly-b2b-quote-body { overflow: visible; }\n  .ly-b2b-toc-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }\n}\n@media (max-width: 640px) {\n  .ly-b2b-hero-inner { padding-top: 34px; }\n  .ly-b2b-caption-strip { position: static; margin-top: 12px; grid-template-columns: 1fr; }\n  .ly-b2b-summary-grid, .ly-b2b-procurement-list, .ly-b2b-image-row, .ly-b2b-bottom-cta { grid-template-columns: 1fr; }\n  .ly-b2b-toc-list { grid-template-columns: 1fr; }\n  .ly-b2b-summary-item { border-right: 0; border-bottom: 1px solid var(--ly-line); }\n  .ly-b2b-summary-item:last-child { border-bottom: 0; }\n  .ly-b2b-hero-actions .ly-b2b-btn, .ly-b2b-bottom-cta .ly-b2b-btn { width: 100%; }\n}\n<\/style>\n<div class=\"ly-b2b-article-template\" data-template=\"lydenim-b2b-article-v3-toc-sticky\" data-source-post=\"6857\">\n<section class=\"ly-b2b-hero\">\n<div class=\"ly-b2b-hero-inner\">\n<div>\n        <span class=\"ly-b2b-eyebrow\">Quality Control and Buying Risk \/ Denim knowledge<\/span><\/p>\n<h1>Denim Shrinkage Testing: 7 Proven,Fail-Safe QC Steps<\/h1>\n<p class=\"ly-b2b-lead\">Denim shrinkage testing made simple. Learn 7 proven QC steps covering colorfastness and dimensional stability to prevent returns and boost brand trust.<\/p>\n<div class=\"ly-b2b-hero-actions\">\n          <a class=\"ly-b2b-btn ly-b2b-btn-primary\" href=\"https:\/\/lydenim.com\/th\/contact\/\">Request Samples<\/a><br \/>\n          <a class=\"ly-b2b-btn ly-b2b-btn-secondary\" href=\"https:\/\/lydenim.com\/th\/custom-denim-fabric\/\">View Custom Options<\/a>\n        <\/div>\n<\/p><\/div>\n<div class=\"ly-b2b-hero-media\">\n        <img decoding=\"async\" src=\"https:\/\/lydenim.com\/wp-content\/uploads\/2025\/11\/Denim-Shrinkage-Testing.jpg\" alt=\"Denim Shrinkage Testing: 7 Proven,Fail-Safe QC Steps\"><\/p>\n<div class=\"ly-b2b-caption-strip\">\n<div class=\"ly-b2b-mini-stat\"><strong>B2B<\/strong><span>sourcing guide<\/span><\/div>\n<div class=\"ly-b2b-mini-stat\"><strong>Custom<\/strong><span>sample to bulk<\/span><\/div>\n<div class=\"ly-b2b-mini-stat\"><strong>Quote<\/strong><span>ready checklist<\/span><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/section>\n<section class=\"ly-b2b-summary-band\">\n<div class=\"ly-b2b-wrap ly-b2b-summary-grid\">\n<div class=\"ly-b2b-summary-item\"><span>Best for<\/span><strong>Brands, designers, wholesalers and garment factories<\/strong><\/div>\n<div class=\"ly-b2b-summary-item\"><span>Main value<\/span><strong>Turn research into a clearer sourcing brief<\/strong><\/div>\n<div class=\"ly-b2b-summary-item\"><span>What to prepare<\/span><strong>Application, quantity, target quality and sample needs<\/strong><\/div>\n<div class=\"ly-b2b-summary-item\"><span>Next action<\/span><strong>Send requirements for swatches or quotation<\/strong><\/div>\n<\/p><\/div>\n<\/section>\n<div class=\"ly-b2b-wrap ly-b2b-layout\">\n<aside class=\"ly-b2b-toc-panel\" aria-label=\"Article reading index\">\n    <span class=\"ly-b2b-toc-kicker\">Article Guide<\/span><\/p>\n<h2 class=\"ly-b2b-toc-title\">In This Guide<\/h2>\n<ol class=\"ly-b2b-toc-list\">\n<li><a href=\"#buyer-summary\">Buyer Summary<\/a><\/li>\n<li><a href=\"#why-b2b-buyers\">Why It Matters<\/a><\/li>\n<li><a href=\"#specification-table\">Specification Table<\/a><\/li>\n<li><a href=\"#applications-custom-options\">Applications<\/a><\/li>\n<li><a href=\"#quality-control\">Quality Control<\/a><\/li>\n<li><a href=\"#sample-development\">Sample Process<\/a><\/li>\n<li><a href=\"#faq\">FAQ<\/a><\/li>\n<li><a href=\"#get-quote\">Get A Quote<\/a><\/li>\n<\/ol>\n<div class=\"ly-b2b-toc-action\">\n      <a class=\"ly-b2b-btn ly-b2b-btn-primary\" href=\"https:\/\/lydenim.com\/th\/contact\/\">Request Samples<\/a>\n    <\/div>\n<\/aside>\n<article class=\"ly-b2b-content-stack\">\n<section class=\"ly-b2b-section ly-b2b-procurement-box\" id=\"buyer-summary\">\n<h2>Buyer Summary<\/h2>\n<p>Quality control content is closest to purchase decisions because it helps buyers avoid returns, bulk inconsistency and preventable production mistakes.<\/p>\n<ul class=\"ly-b2b-procurement-list\">\n<li><strong>Suitable buyers<\/strong>Fashion brands, sourcing teams, wholesalers, garment factories and product developers.<\/li>\n<li><strong>What to confirm<\/strong>Target product, fabric direction, finish, sample needs, quantity and delivery market.<\/li>\n<li><strong>Buyer risk<\/strong>Unclear specs can lead to wrong samples, unstable bulk quality and slow quotations.<\/li>\n<li><strong>Recommended CTA<\/strong>Request swatches or a sample quote before committing to bulk production.<\/li>\n<\/ul>\n<\/section>\n<section class=\"ly-b2b-section\" id=\"why-b2b-buyers\">\n<h2>Why This Matters for B2B Buyers<\/h2>\n<p>Confirm inspection points, shrinkage, colorfastness, defect tolerance and sample approval standards before bulk order.<\/p>\n<p>Denim shrinkage testing made simple. Learn 7 proven QC steps covering colorfastness and dimensional stability to prevent returns and boost brand trust.<\/p>\n<div class=\"ly-b2b-image-row\">\n<figure><img decoding=\"async\" src=\"https:\/\/lydenim.com\/wp-content\/uploads\/2025\/03\/Cotton-and-Its-Role-in-Denim-Fabric.jpg\" alt=\"Denim Shrinkage Testing: 7 Proven,Fail-Safe QC Steps sample detail\"><figcaption>Use product visuals with sourcing notes so readers can connect ideas to real development requirements.<\/figcaption><\/figure>\n<figure><img decoding=\"async\" src=\"https:\/\/lydenim.com\/wp-content\/uploads\/2025\/07\/Denim-Shrinkage-A-Comprehensive-Guide.jpg\" alt=\"Denim Shrinkage Testing: 7 Proven,Fail-Safe QC Steps application reference\"><figcaption>Pair inspiration with practical quote details such as weight, finish, handfeel and quantity.<\/figcaption><\/figure>\n<\/p><\/div>\n<\/section>\n<section class=\"ly-b2b-section\" id=\"specification-table\">\n<h2>Specification Table for Faster Sourcing<\/h2>\n<div class=\"ly-b2b-table-wrap\">\n<table>\n<thead>\n<tr>\n<th>Decision point<\/th>\n<th>Options to compare<\/th>\n<th>Why it matters<\/th>\n<th>Buyer question<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Test item<\/td>\n<td>Shrinkage, colorfastness, defects, handfeel, stretch recovery<\/td>\n<td>Prevents returns and quality disputes<\/td>\n<td>Which tests are required by your buyer?<\/td>\n<\/tr>\n<tr>\n<td>Sample approval<\/td>\n<td>Lab dip, handloom, sample yardage, pre-production sample<\/td>\n<td>Creates a clear standard for bulk comparison<\/td>\n<td>What must be approved before bulk?<\/td>\n<\/tr>\n<tr>\n<td>Inspection point<\/td>\n<td>Before cutting, during production, final inspection<\/td>\n<td>Catches issues earlier<\/td>\n<td>Who confirms the inspection criteria?<\/td>\n<\/tr>\n<tr>\n<td>Tolerance<\/td>\n<td>Color shade, shrinkage rate, width, GSM, defect rate<\/td>\n<td>Defines acceptable variance<\/td>\n<td>What tolerance does your market accept?<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/section>\n<section class=\"ly-b2b-section\" id=\"applications-custom-options\">\n<h2>Applications and Custom Options<\/h2>\n<div class=\"ly-b2b-cards\">\n<div class=\"ly-b2b-info-card\">\n<div class=\"ly-b2b-icon\">1<\/div>\n<h3>Product Development<\/h3>\n<p>Use this guide to turn design ideas into fabric, garment, finish and sample requirements.<\/p>\n<\/div>\n<div class=\"ly-b2b-info-card\">\n<div class=\"ly-b2b-icon\">2<\/div>\n<h3>Supplier Comparison<\/h3>\n<p>Compare suppliers by sample support, technical clarity, bulk stability and communication speed.<\/p>\n<\/div>\n<div class=\"ly-b2b-info-card\">\n<div class=\"ly-b2b-icon\">3<\/div>\n<h3>Bulk Production<\/h3>\n<p>Confirm quality standards, approved samples and timeline before placing production orders.<\/p>\n<\/div><\/div>\n<\/section>\n<section class=\"ly-b2b-section\" id=\"quality-control\">\n<h2>Quality Control Points Before Bulk Order<\/h2>\n<ul class=\"ly-b2b-checklist\">\n<li><span class=\"ly-b2b-tick\">OK<\/span><span><strong>Sample approval:<\/strong> confirm fabric, color, handfeel, construction and finish before bulk production.<\/span><\/li>\n<li><span class=\"ly-b2b-tick\">OK<\/span><span><strong>Bulk consistency:<\/strong> compare bulk lots against the approved sample under the same light and test conditions.<\/span><\/li>\n<li><span class=\"ly-b2b-tick\">OK<\/span><span><strong>Performance testing:<\/strong> check shrinkage, colorfastness, stretch recovery or decoration durability where relevant.<\/span><\/li>\n<li><span class=\"ly-b2b-tick\">OK<\/span><span><strong>Quote clarity:<\/strong> send quantity, destination, packaging needs and target lead time to avoid vague pricing.<\/span><\/li>\n<\/ul>\n<\/section>\n<section class=\"ly-b2b-section\" id=\"sample-development\">\n<h2>Sample Development Process<\/h2>\n<div class=\"ly-b2b-table-wrap\">\n<table>\n<thead>\n<tr>\n<th>Step<\/th>\n<th>Buyer provides<\/th>\n<th>Supplier confirms<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>1. Brief<\/td>\n<td>Application, reference images, target quality and quantity<\/td>\n<td>Feasibility, recommended material and custom options<\/td>\n<\/tr>\n<tr>\n<td>2. Swatch<\/td>\n<td>Preferred color, handfeel, pattern or finish feedback<\/td>\n<td>Available stock, custom direction and sample cost<\/td>\n<\/tr>\n<tr>\n<td>3. Sample<\/td>\n<td>Garment test plan, size or yardage needs<\/td>\n<td>Sampling timeline and production repeatability<\/td>\n<\/tr>\n<tr>\n<td>4. Bulk quote<\/td>\n<td>Order quantity, delivery destination and packaging needs<\/td>\n<td>Unit price, MOQ, lead time and QC checkpoints<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/section>\n<section class=\"ly-b2b-section\" id=\"detailed-guide\">\n<h2>Detailed Guide<\/h2>\n<div class=\"ly-b2b-original-guide\">\n<h2>Estimated reading time: ~5 minutes<\/h2>\n<p>If you make jeans or jackets, denim shrinkage testing is non-negotiable. Done right, denim shrinkage testing catches fit issues before bulk production, while companion tests for colorfastness and dimensional stability prevent returns and protect your brand. Build your size specs and tolerances on denim shrinkage testing data\u2014not guesswork.\u00a0Background on cotton and shrinkage: <a href=\"https:\/\/lydenim.com\/th\/cotton-and-its-role-in-denim-fabric\/\">Cotton and Its Role in Denim Fabric<\/a>; plus drape &amp; weight context: <a href=\"https:\/\/lydenim.com\/th\/denim-drape-engineering-how-denim-fabric-weight-shapes-garment-silhouettes\/\">How Denim Fabric Weight Shapes Garment Silhouettes<\/a>.<\/p>\n<div id=\"attachment_4401\" style=\"width: 610px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/lydenim.com\/th\/cotton-and-its-role-in-denim-fabric\/\"><img fetchpriority=\"high\" decoding=\"async\" aria-describedby=\"caption-attachment-4401\" class=\"wd-lazy-fade wp-image-4401 size-full\" src=\"https:\/\/lydenim.com\/wp-content\/themes\/woodmart\/images\/lazy.svg\" data-src=\"https:\/\/lydenim.com\/wp-content\/uploads\/2025\/03\/Cotton-and-Its-Role-in-Denim-Fabric.jpg\" alt=\"Cotton and Its Role in Denim Fabric\" width=\"600\" height=\"800\" srcset=\"\" data-srcset=\"https:\/\/lydenim.com\/wp-content\/uploads\/2025\/03\/Cotton-and-Its-Role-in-Denim-Fabric.jpg 600w, https:\/\/lydenim.com\/wp-content\/uploads\/2025\/03\/Cotton-and-Its-Role-in-Denim-Fabric-225x300.jpg 225w, https:\/\/lydenim.com\/wp-content\/uploads\/2025\/03\/Cotton-and-Its-Role-in-Denim-Fabric-9x12.jpg 9w, https:\/\/lydenim.com\/wp-content\/uploads\/2025\/03\/Cotton-and-Its-Role-in-Denim-Fabric-150x200.jpg 150w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/a><p id=\"caption-attachment-4401\" class=\"wp-caption-text\">Cotton and Its<br \/>Role in Denim Fabric<\/p><\/div>\n<p><strong>Quick links in this guide:<\/strong><\/p>\n<ul>\n<li>Denim Shrinkage Testing (AATCC TM135)<\/li>\n<\/ul>\n<p>Further reading:<a href=\"https:\/\/lydenim.com\/th\/denim-shrinkage-a-comprehensive-guide\/\">Denim Shrinkage: A Comprehensive Guide <\/a>and <a href=\"https:\/\/lydenim.com\/th\/fabric-shrinkage\/\">Understanding Denim Fabric Shrinkage<\/a><\/p>\n<ul>\n<li>Colorfastness to Light (AATCC 16)<a href=\"https:\/\/lydenim.com\/th\/denim-shrinkage-a-comprehensive-guide\/\"><img decoding=\"async\" class=\"wd-lazy-fade aligncenter wp-image-5750 size-full\" src=\"https:\/\/lydenim.com\/wp-content\/themes\/woodmart\/images\/lazy.svg\" data-src=\"https:\/\/lydenim.com\/wp-content\/uploads\/2025\/07\/Denim-Shrinkage-A-Comprehensive-Guide.jpg\" alt=\"\" width=\"600\" height=\"800\" srcset=\"\" data-srcset=\"https:\/\/lydenim.com\/wp-content\/uploads\/2025\/07\/Denim-Shrinkage-A-Comprehensive-Guide.jpg 600w, https:\/\/lydenim.com\/wp-content\/uploads\/2025\/07\/Denim-Shrinkage-A-Comprehensive-Guide-225x300.jpg 225w, https:\/\/lydenim.com\/wp-content\/uploads\/2025\/07\/Denim-Shrinkage-A-Comprehensive-Guide-9x12.jpg 9w, https:\/\/lydenim.com\/wp-content\/uploads\/2025\/07\/Denim-Shrinkage-A-Comprehensive-Guide-150x200.jpg 150w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/a><\/li>\n<\/ul>\n<p>Buying checklist:<a href=\"https:\/\/lydenim.com\/th\/denim-quality-assessment-and-purchasing-guide\/\">Denim Quality Assessment and Purchasing Guide<\/a><\/p>\n<ul>\n<li>Colorfastness to Perspiration (ISO 105-E04)<\/li>\n<li>Abrasion &amp; Pilling (ISO 12947 Martindale)<\/li>\n<li>Action checklist<\/li>\n<\/ul>\n<p>See also:<a href=\"https:\/\/lydenim.com\/th\/ultimate-denim-fabric-quality-control-checklist-10-tips\/\">Ultimate Denim Fabric Quality Control Checklist: 10 Tips<\/a><\/p>\n<h2><strong><b>Why denim shrinkage testing must be done (and what to test)<\/b><\/strong><\/h2>\n<p>When denim skips standardized testing, you risk off-size garments, dye transfer, and accelerated wear. Use AATCC TM135 for dimensional changes after home laundering, AATCC 16 for light colorfastness, and ISO 105-E04 for perspiration colorfastness. These methods mirror how customers wear and wash your products in real life.<\/p>\n<div id=\"attachment_6883\" style=\"width: 610px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" aria-describedby=\"caption-attachment-6883\" class=\"wd-lazy-fade wp-image-6883\" src=\"https:\/\/lydenim.com\/wp-content\/themes\/woodmart\/images\/lazy.svg\" data-src=\"https:\/\/lydenim.com\/wp-content\/uploads\/2025\/11\/645c26dd063e030e02b449d347c4fe76.jpg\" alt=\"\" width=\"600\" height=\"750\" srcset=\"\" data-srcset=\"https:\/\/lydenim.com\/wp-content\/uploads\/2025\/11\/645c26dd063e030e02b449d347c4fe76.jpg 1668w, https:\/\/lydenim.com\/wp-content\/uploads\/2025\/11\/645c26dd063e030e02b449d347c4fe76-240x300.jpg 240w, https:\/\/lydenim.com\/wp-content\/uploads\/2025\/11\/645c26dd063e030e02b449d347c4fe76-819x1024.jpg 819w, https:\/\/lydenim.com\/wp-content\/uploads\/2025\/11\/645c26dd063e030e02b449d347c4fe76-768x960.jpg 768w, https:\/\/lydenim.com\/wp-content\/uploads\/2025\/11\/645c26dd063e030e02b449d347c4fe76-1229x1536.jpg 1229w, https:\/\/lydenim.com\/wp-content\/uploads\/2025\/11\/645c26dd063e030e02b449d347c4fe76-1638x2048.jpg 1638w, https:\/\/lydenim.com\/wp-content\/uploads\/2025\/11\/645c26dd063e030e02b449d347c4fe76-10x12.jpg 10w, https:\/\/lydenim.com\/wp-content\/uploads\/2025\/11\/645c26dd063e030e02b449d347c4fe76-480x600.jpg 480w, https:\/\/lydenim.com\/wp-content\/uploads\/2025\/11\/645c26dd063e030e02b449d347c4fe76-600x750.jpg 600w, https:\/\/lydenim.com\/wp-content\/uploads\/2025\/11\/645c26dd063e030e02b449d347c4fe76-150x188.jpg 150w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><p id=\"caption-attachment-6883\" class=\"wp-caption-text\">shrinkage testing<\/p><\/div>\n<h2><strong><b>Denim Shrinkage Testing (AATCC TM135)<\/b><\/strong><\/h2>\n<p>AATCC TM135 measures length\/width change after defined wash cycles and temperatures to simulate home laundering. Base your patterns and tolerances on TM135 results and verify shrinkage before cutting bulk. If you sell \u201craw\/one-wash\u201d styles, test both before and after the initial soak.\u00a0For raw and selvedge programs, see <a href=\"https:\/\/lydenim.com\/th\/raw-denim-fabric-a-comprehensive-guide-to-raw-and-selvedge-denim\/\">A Comprehensive Guide to Raw and Selvedge Denim<\/a>.<\/p>\n<h3><strong><b>Sanforization to control dimensional stability<\/b><\/strong><\/h3>\n<p>Prevention tips:<a href=\"https:\/\/lydenim.com\/th\/fabric-shrinkage-how-to-prevent-it\/\">Fabric Shrinkage &amp; How to Prevent It<\/a><\/p>\n<p>Pre-shrinking via sanforization can reduce shrinkage from about 10% down to roughly 1\u20133% when properly executed\u2014crucial for rigid and heavier selvedge. The process moistens and compacts fabric under heat\/pressure before cutting to stabilize dimensions.<\/p>\n<div id=\"attachment_6882\" style=\"width: 610px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-6882\" class=\"wd-lazy-fade wp-image-6882\" src=\"https:\/\/lydenim.com\/wp-content\/themes\/woodmart\/images\/lazy.svg\" data-src=\"https:\/\/lydenim.com\/wp-content\/uploads\/2025\/11\/77c11c40036baaddd25c0ee644904103.jpg\" alt=\"\" width=\"600\" height=\"337\" srcset=\"\" data-srcset=\"https:\/\/lydenim.com\/wp-content\/uploads\/2025\/11\/77c11c40036baaddd25c0ee644904103.jpg 1254w, https:\/\/lydenim.com\/wp-content\/uploads\/2025\/11\/77c11c40036baaddd25c0ee644904103-300x169.jpg 300w, https:\/\/lydenim.com\/wp-content\/uploads\/2025\/11\/77c11c40036baaddd25c0ee644904103-1024x576.jpg 1024w, https:\/\/lydenim.com\/wp-content\/uploads\/2025\/11\/77c11c40036baaddd25c0ee644904103-768x432.jpg 768w, https:\/\/lydenim.com\/wp-content\/uploads\/2025\/11\/77c11c40036baaddd25c0ee644904103-18x10.jpg 18w, https:\/\/lydenim.com\/wp-content\/uploads\/2025\/11\/77c11c40036baaddd25c0ee644904103-600x337.jpg 600w, https:\/\/lydenim.com\/wp-content\/uploads\/2025\/11\/77c11c40036baaddd25c0ee644904103-150x84.jpg 150w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><p id=\"caption-attachment-6882\" class=\"wp-caption-text\">Sanforization<\/p><\/div>\n<h2><strong><b>Colorfastness to Light (AATCC 16)<\/b><\/strong><\/h2>\n<p>Fading complaints devastate reviews. AATCC 16 (xenon-arc\/carbon-arc options) exposes specimens to controlled light and grades fading on a gray scale. Match required grades to end use (outerwear vs. fashion).<\/p>\n<div id=\"attachment_6884\" style=\"width: 610px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-6884\" class=\"wd-lazy-fade wp-image-6884\" src=\"https:\/\/lydenim.com\/wp-content\/themes\/woodmart\/images\/lazy.svg\" data-src=\"https:\/\/lydenim.com\/wp-content\/uploads\/2025\/11\/2269a833cb0c868b9922aaa690eb474e.jpg\" alt=\"\" width=\"600\" height=\"870\" srcset=\"\" data-srcset=\"https:\/\/lydenim.com\/wp-content\/uploads\/2025\/11\/2269a833cb0c868b9922aaa690eb474e.jpg 841w, https:\/\/lydenim.com\/wp-content\/uploads\/2025\/11\/2269a833cb0c868b9922aaa690eb474e-207x300.jpg 207w, https:\/\/lydenim.com\/wp-content\/uploads\/2025\/11\/2269a833cb0c868b9922aaa690eb474e-706x1024.jpg 706w, https:\/\/lydenim.com\/wp-content\/uploads\/2025\/11\/2269a833cb0c868b9922aaa690eb474e-768x1114.jpg 768w, https:\/\/lydenim.com\/wp-content\/uploads\/2025\/11\/2269a833cb0c868b9922aaa690eb474e-8x12.jpg 8w, https:\/\/lydenim.com\/wp-content\/uploads\/2025\/11\/2269a833cb0c868b9922aaa690eb474e-414x600.jpg 414w, https:\/\/lydenim.com\/wp-content\/uploads\/2025\/11\/2269a833cb0c868b9922aaa690eb474e-600x870.jpg 600w, https:\/\/lydenim.com\/wp-content\/uploads\/2025\/11\/2269a833cb0c868b9922aaa690eb474e-150x218.jpg 150w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><p id=\"caption-attachment-6884\" class=\"wp-caption-text\">Colorfastness<\/p><\/div>\n<h2><strong><b>Colorfastness to Perspiration (ISO 105-E04)<\/b><\/strong><\/h2>\n<p>Summer wear, workwear and athleisure need sweat resistance. ISO 105-E04 simulates perspiration to assess dye bleeding and staining of adjacent fabrics; pair with rubbing tests when offering deep indigo or over-dyed blacks.<\/p>\n<div id=\"attachment_6887\" style=\"width: 610px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-6887\" class=\"wd-lazy-fade wp-image-6887\" src=\"https:\/\/lydenim.com\/wp-content\/themes\/woodmart\/images\/lazy.svg\" data-src=\"https:\/\/lydenim.com\/wp-content\/uploads\/2025\/11\/d905eecd173d43a62bc85aed80e84f46.jpg\" alt=\"\" width=\"600\" height=\"750\" srcset=\"\" data-srcset=\"https:\/\/lydenim.com\/wp-content\/uploads\/2025\/11\/d905eecd173d43a62bc85aed80e84f46.jpg 1668w, https:\/\/lydenim.com\/wp-content\/uploads\/2025\/11\/d905eecd173d43a62bc85aed80e84f46-240x300.jpg 240w, https:\/\/lydenim.com\/wp-content\/uploads\/2025\/11\/d905eecd173d43a62bc85aed80e84f46-819x1024.jpg 819w, https:\/\/lydenim.com\/wp-content\/uploads\/2025\/11\/d905eecd173d43a62bc85aed80e84f46-768x960.jpg 768w, https:\/\/lydenim.com\/wp-content\/uploads\/2025\/11\/d905eecd173d43a62bc85aed80e84f46-1229x1536.jpg 1229w, https:\/\/lydenim.com\/wp-content\/uploads\/2025\/11\/d905eecd173d43a62bc85aed80e84f46-1638x2048.jpg 1638w, https:\/\/lydenim.com\/wp-content\/uploads\/2025\/11\/d905eecd173d43a62bc85aed80e84f46-10x12.jpg 10w, https:\/\/lydenim.com\/wp-content\/uploads\/2025\/11\/d905eecd173d43a62bc85aed80e84f46-480x600.jpg 480w, https:\/\/lydenim.com\/wp-content\/uploads\/2025\/11\/d905eecd173d43a62bc85aed80e84f46-600x750.jpg 600w, https:\/\/lydenim.com\/wp-content\/uploads\/2025\/11\/d905eecd173d43a62bc85aed80e84f46-150x188.jpg 150w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><p id=\"caption-attachment-6887\" class=\"wp-caption-text\">Colorfastness to Perspiration<\/p><\/div>\n<h3><strong><b>Crocking (dry\/wet) \u2014 AATCC 8<\/b><\/strong><\/h3>\n<p>Inspection tools:<a href=\"https:\/\/lydenim.com\/es\/denim-fabric-defects-inspection-checklist\/\">Denim Fabric Defects &amp; Inspection Checklist<\/a><\/p>\n<p>Deep indigo often rubs off on light surfaces. AATCC 8 quantifies dry\/wet dye transfer via Crockmeter; improve dye\/finish if wet grades lag.<\/p>\n<div id=\"attachment_6885\" style=\"width: 610px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-6885\" class=\"wd-lazy-fade wp-image-6885\" src=\"https:\/\/lydenim.com\/wp-content\/themes\/woodmart\/images\/lazy.svg\" data-src=\"https:\/\/lydenim.com\/wp-content\/uploads\/2025\/11\/b9a9b230f81405721884e271763fa4d5.jpg\" alt=\"\" width=\"600\" height=\"871\" srcset=\"\" data-srcset=\"https:\/\/lydenim.com\/wp-content\/uploads\/2025\/11\/b9a9b230f81405721884e271763fa4d5.jpg 773w, https:\/\/lydenim.com\/wp-content\/uploads\/2025\/11\/b9a9b230f81405721884e271763fa4d5-207x300.jpg 207w, https:\/\/lydenim.com\/wp-content\/uploads\/2025\/11\/b9a9b230f81405721884e271763fa4d5-705x1024.jpg 705w, https:\/\/lydenim.com\/wp-content\/uploads\/2025\/11\/b9a9b230f81405721884e271763fa4d5-768x1115.jpg 768w, https:\/\/lydenim.com\/wp-content\/uploads\/2025\/11\/b9a9b230f81405721884e271763fa4d5-8x12.jpg 8w, https:\/\/lydenim.com\/wp-content\/uploads\/2025\/11\/b9a9b230f81405721884e271763fa4d5-413x600.jpg 413w, https:\/\/lydenim.com\/wp-content\/uploads\/2025\/11\/b9a9b230f81405721884e271763fa4d5-600x871.jpg 600w, https:\/\/lydenim.com\/wp-content\/uploads\/2025\/11\/b9a9b230f81405721884e271763fa4d5-150x218.jpg 150w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><p id=\"caption-attachment-6885\" class=\"wp-caption-text\">Crocking (dry\/wet)<\/p><\/div>\n<h2><strong><b>Abrasion &amp; Pilling (ISO 12947)<\/b><\/strong><\/h2>\n<p>Denim used for workwear must withstand scuffs. ISO 12947 (Martindale) defines the apparatus and assessment to gauge abrasion resistance and appearance change\u2014useful predictors for worn knees and pocket edges.<\/p>\n<div id=\"attachment_6886\" style=\"width: 610px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-6886\" class=\"wd-lazy-fade wp-image-6886\" src=\"https:\/\/lydenim.com\/wp-content\/themes\/woodmart\/images\/lazy.svg\" data-src=\"https:\/\/lydenim.com\/wp-content\/uploads\/2025\/11\/d7cd1e2b1d0254830687a8d9687627d7.jpg\" alt=\"\" width=\"600\" height=\"750\" srcset=\"\" data-srcset=\"https:\/\/lydenim.com\/wp-content\/uploads\/2025\/11\/d7cd1e2b1d0254830687a8d9687627d7.jpg 834w, https:\/\/lydenim.com\/wp-content\/uploads\/2025\/11\/d7cd1e2b1d0254830687a8d9687627d7-240x300.jpg 240w, https:\/\/lydenim.com\/wp-content\/uploads\/2025\/11\/d7cd1e2b1d0254830687a8d9687627d7-820x1024.jpg 820w, https:\/\/lydenim.com\/wp-content\/uploads\/2025\/11\/d7cd1e2b1d0254830687a8d9687627d7-768x960.jpg 768w, https:\/\/lydenim.com\/wp-content\/uploads\/2025\/11\/d7cd1e2b1d0254830687a8d9687627d7-10x12.jpg 10w, https:\/\/lydenim.com\/wp-content\/uploads\/2025\/11\/d7cd1e2b1d0254830687a8d9687627d7-480x600.jpg 480w, https:\/\/lydenim.com\/wp-content\/uploads\/2025\/11\/d7cd1e2b1d0254830687a8d9687627d7-600x750.jpg 600w, https:\/\/lydenim.com\/wp-content\/uploads\/2025\/11\/d7cd1e2b1d0254830687a8d9687627d7-150x187.jpg 150w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><p id=\"caption-attachment-6886\" class=\"wp-caption-text\">Abrasion &amp; Pilling<\/p><\/div>\n<h2><strong><b>Practical QC targets &amp; tolerances<\/b><\/strong><\/h2>\n<p>Further reading:<a href=\"https:\/\/lydenim.com\/th\/what-is-denim-a-complete-guide\/\">What Is Denim: A Complete Guide<\/a>and<a href=\"https:\/\/lydenim.com\/th\/how-denim-is-made\/\">How Denim Is Made: From Cotton to Jeans<\/a><\/p>\n<ul>\n<li>Shrinkage (post-wash): confirm pattern allowances vs. TM135 data per fabric\/finish.<\/li>\n<li>Light fastness: choose AATCC 16 option\/grade by end use; align with marketing promises.<\/li>\n<li>Perspiration: apply ISO 105-E04 for tops\/linings &amp; humid markets; monitor staining.<\/li>\n<li>Crocking: run AATCC 8 dry\/wet; adjust dye\/finishing if grades are low.<\/li>\n<li>Abrasion: use ISO 12947 cycles as a gating spec for heavy-duty lines.<\/li>\n<\/ul>\n<h2><strong><b>Sourcing &amp; development (CTA)<\/b><\/strong><\/h2>\n<p>Browse LYDENIM\u2019s fabric library to pick pre-tested denims and speed sampling: <a href=\"https:\/\/lydenim.com\/th\/\"><u>https:\/\/lydenim.com<\/u><\/a><\/p>\n<p>Need small-MOQ custom cuts, trims and washes? Start a spec with Liangyuan Textile: <a href=\"https:\/\/liangyuantextile.m.en.alibaba.com\"><u>https:\/\/liangyuantextile.m.en.alibaba.com<\/u><\/a><\/p>\n<h2><strong><b>Related posts (internal links)<\/b><\/strong><\/h2>\n<p>plus-size-high-waist-stretch-denim-guide: <a href=\"\/th\/plus-size-high-waist-stretch-denim-guide\/\"><u>\/plus-size-high-waist-stretch-denim-guide<\/u><\/a><\/p>\n<p>selvedge-denim-buying-guide: <a href=\"\/th\/selvedge-denim-buying-guide\/\"><u>\/selvedge-denim-buying-guide<\/u><\/a><\/p>\n<h2 dir=\"auto\">Customization Services by LYDENIM<\/h2>\n<p>Dreaming of premium fabrics with outstanding texture and durability? LYDENIM specializes in high-quality textiles and bespoke garment solutions, helping you turn creative ideas into reality with precision and style.<\/p>\n<p>\ud83c\udfa8 Custom Fabrics<br \/>\nDesign your own fabric collection with LYDENIM\u2019s premium materials. From luxurious cotton blends to innovative eco-friendly textiles, explore colors, weaves, and finishes that perfectly match your brand or design vision. Visit <a href=\"http:\/\/LYDENIM.COM\/PRODUCT\/\">LYDENIM<\/a> to learn more.<\/p>\n<p>\ud83d\udecd\ufe0f Tailored Garment Solutions<br \/>\nBring your designs to life with our custom garment services. Whether it\u2019s tailored suits, stylish dresses, or durable workwear, we ensure perfect fit, superior comfort, and lasting quality. Explore customization options on <a href=\"http:\/\/liangyuantextile.m.en.alibaba.com\">Myalibaba.<\/a><\/p>\n<p>\ud83d\udce9 Get in Touch<br \/>\nHave a project in mind? Contact our team at <a href=\"mailto:malone@lydenim.com\">malone@lydenim.com<\/a> to discuss custom fabrics, garment design, or sustainable textile solutions.<\/p>\n<p>Transform your ideas into reality with LYDENIM\u2014your trusted partner for innovative, high-quality fabrics and bespoke apparel solutions.<\/p><\/div>\n<\/section>\n<section class=\"ly-b2b-section\" id=\"faq\">\n<h2>FAQ<\/h2>\n<div class=\"ly-b2b-faq\">\n<details open>\n<summary>Can this be customized for my brand or collection?<\/summary>\n<p>Yes. Send your application, reference images, target quality, quantity and market requirements so the supplier can recommend suitable fabric, garment or finishing options.<\/p>\n<\/details>\n<details>\n<summary>What information should I send before asking for a quote?<\/summary>\n<p>Prepare product type, target fabric or technique, color direction, sample needs, quantity, destination country and expected lead time.<\/p>\n<\/details>\n<details>\n<summary>Should I request swatches before bulk production?<\/summary>\n<p>Yes. Swatches and sample yardage reduce risk before bulk orders, especially when color, handfeel, stretch, finish or decoration quality matters.<\/p>\n<\/details>\n<details>\n<summary>How can I avoid quality problems in bulk orders?<\/summary>\n<p>Approve a clear sample standard, define test requirements, confirm tolerances and compare bulk output against the approved sample before shipment.<\/p>\n<\/details><\/div>\n<\/section>\n<section class=\"ly-b2b-bottom-cta\" id=\"get-quote\">\n<div>\n<h2>Need help turning this into a production-ready sourcing brief?<\/h2>\n<p>Send your target product, fabric direction, quantity and sample needs. LY Denim can help compare options and prepare a quote.<\/p>\n<\/div>\n<p>        <a class=\"ly-b2b-btn\" href=\"https:\/\/lydenim.com\/th\/contact\/\">Get A Quote<\/a><br \/>\n      <\/section>\n<\/article>\n<aside class=\"ly-b2b-quote-panel\" aria-label=\"Quote request panel\">\n      <img decoding=\"async\" src=\"https:\/\/lydenim.com\/wp-content\/uploads\/2025\/11\/645c26dd063e030e02b449d347c4fe76.jpg\" alt=\"Denim Shrinkage Testing: 7 Proven,Fail-Safe QC Steps quote reference\"><\/p>\n<div class=\"ly-b2b-quote-body\">\n<h3>Fast Quote Checklist<\/h3>\n<p>Help the sales team reply faster by sending complete sourcing details.<\/p>\n<ul class=\"ly-b2b-quote-list\">\n<li>Target application<\/li>\n<li>Fabric, finish or garment reference<\/li>\n<li>Sample or bulk quantity<\/li>\n<li>Destination market<\/li>\n<li>Expected timeline<\/li>\n<\/ul>\n<p>        <a class=\"ly-b2b-btn ly-b2b-btn-primary\" href=\"https:\/\/lydenim.com\/th\/contact\/\">Request Samples<\/a>\n      <\/div>\n<\/aside><\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Quality Control and Buying Risk \/ Denim knowledge Denim Shrinkage Testing: 7 Proven,Fail-Safe QC Steps Denim shrinkage testing made simple.<\/p>","protected":false},"author":1,"featured_media":6888,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"two_page_speed":[],"footnotes":""},"categories":[66],"tags":[],"class_list":["post-6857","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-denim-knowledge"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/lydenim.com\/th\/wp-json\/wp\/v2\/posts\/6857","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lydenim.com\/th\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lydenim.com\/th\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lydenim.com\/th\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lydenim.com\/th\/wp-json\/wp\/v2\/comments?post=6857"}],"version-history":[{"count":0,"href":"https:\/\/lydenim.com\/th\/wp-json\/wp\/v2\/posts\/6857\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/lydenim.com\/th\/wp-json\/wp\/v2\/media\/6888"}],"wp:attachment":[{"href":"https:\/\/lydenim.com\/th\/wp-json\/wp\/v2\/media?parent=6857"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lydenim.com\/th\/wp-json\/wp\/v2\/categories?post=6857"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lydenim.com\/th\/wp-json\/wp\/v2\/tags?post=6857"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}