{"id":6063,"date":"2025-11-21T11:05:59","date_gmt":"2025-11-21T11:05:59","guid":{"rendered":"https:\/\/amazingqualitycontrol.com\/?post_type=glossary&#038;p=6063"},"modified":"2025-11-21T11:06:00","modified_gmt":"2025-11-21T11:06:00","slug":"aql-table","status":"publish","type":"glossary","link":"https:\/\/amazingqualitycontrol.com\/fr\/glossary\/aql-table\/","title":{"rendered":"Table NQA"},"content":{"rendered":"<p data-start=\"13\" data-end=\"422\">An <strong data-start=\"16\" data-end=\"29\">AQL table<\/strong> (Acceptable Quality Level table) is the reference chart used in <a href=\"https:\/\/amazingqualitycontrol.com\/\">quality control<\/a> to select <strong data-start=\"120\" data-end=\"136\">sample sizes<\/strong> and <strong data-start=\"141\" data-end=\"173\">acceptance\/rejection numbers<\/strong> for lot inspections. Grounded in <a href=\"https:\/\/www.iso.org\/fr\/standard\/1141.html\" target=\"_blank\" rel=\"noopener\"><strong data-start=\"207\" data-end=\"221\">ISO 2859-1<\/strong><\/a> (international) and <strong data-start=\"242\" data-end=\"259\">ANSI\/ASQ Z1.4<\/strong> (U.S.), it lets you evaluate a large production lot by testing only a small, statistically valid sample\u2014keeping risk under control while avoiding 100% inspection.<\/p>\n<h2 data-start=\"429\" data-end=\"475\">What an AQL Table Does (and Why It Matters)<\/h2>\n<p data-start=\"477\" data-end=\"544\">An AQL table translates three inputs into a concrete sampling plan:<\/p>\n<ul data-start=\"546\" data-end=\"881\">\n<li data-start=\"546\" data-end=\"605\">\n<p data-start=\"548\" data-end=\"605\"><strong data-start=\"548\" data-end=\"568\">Lot (batch) size<\/strong> \u2013 total units produced in the run.<\/p>\n<\/li>\n<li data-start=\"606\" data-end=\"714\">\n<p data-start=\"608\" data-end=\"714\"><strong data-start=\"608\" data-end=\"628\">Inspection level<\/strong> \u2013 how intensively you want to check (e.g., General I\/II\/III or Special S-1 to S-4).<\/p>\n<\/li>\n<li data-start=\"715\" data-end=\"881\">\n<p data-start=\"717\" data-end=\"881\"><strong data-start=\"717\" data-end=\"731\">AQL values<\/strong> \u2013 the maximum defect rates you\u2019ll tolerate for each class of defect (typically <strong data-start=\"811\" data-end=\"828\">0.0% critical<\/strong>, <strong data-start=\"830\" data-end=\"844\">2.5% major<\/strong>, <strong data-start=\"846\" data-end=\"860\">4.0% minor<\/strong> for consumer goods).<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"883\" data-end=\"922\">From those inputs, the table gives you:<\/p>\n<ul data-start=\"924\" data-end=\"1147\">\n<li data-start=\"924\" data-end=\"970\">\n<p data-start=\"926\" data-end=\"970\">A <strong data-start=\"928\" data-end=\"955\">sample size code letter<\/strong> (e.g., \u201cK\u201d).<\/p>\n<\/li>\n<li data-start=\"971\" data-end=\"1024\">\n<p data-start=\"973\" data-end=\"1024\">The <strong data-start=\"977\" data-end=\"992\">sample size<\/strong> to inspect (e.g., 125 units).<\/p>\n<\/li>\n<li data-start=\"1025\" data-end=\"1147\">\n<p data-start=\"1027\" data-end=\"1147\">The <strong data-start=\"1031\" data-end=\"1046\">accept (Ac)<\/strong> and <strong data-start=\"1051\" data-end=\"1066\">reject (Re)<\/strong> numbers for each defect class (e.g., at AQL 2.5% major: <strong data-start=\"1123\" data-end=\"1133\">Ac = 7<\/strong>, <strong data-start=\"1135\" data-end=\"1145\">Re = 8<\/strong>).<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"1149\" data-end=\"1374\"><strong data-start=\"1149\" data-end=\"1168\">Why it matters:<\/strong> AQL tables balance cost and risk. They prevent under-inspecting (letting bad lots through) and over-inspecting (wasting time\/money), and they create a shared, objective standard between buyer and supplier.<\/p>\n<p data-start=\"1149\" data-end=\"1374\">\n<figure id=\"attachment_2776\" aria-describedby=\"caption-attachment-2776\" style=\"width: 900px\" class=\"wp-caption aligncenter\"><img fetchpriority=\"high\" decoding=\"async\" class=\"size-full wp-image-2776\" src=\"https:\/\/amazingqualitycontrol.com\/wp-content\/uploads\/2025\/04\/Acceptable-Quality-Level.jpg\" alt=\"Acceptable quality level (AQL) rating checklist\" width=\"900\" height=\"600\" title=\"\" srcset=\"https:\/\/amazingqualitycontrol.com\/wp-content\/uploads\/2025\/04\/Acceptable-Quality-Level.jpg 900w, https:\/\/amazingqualitycontrol.com\/wp-content\/uploads\/2025\/04\/Acceptable-Quality-Level-300x200.jpg 300w, https:\/\/amazingqualitycontrol.com\/wp-content\/uploads\/2025\/04\/Acceptable-Quality-Level-768x512.jpg 768w\" sizes=\"(max-width: 900px) 100vw, 900px\" \/><figcaption id=\"caption-attachment-2776\" class=\"wp-caption-text\">Acceptable quality level (AQL) rating checklist<\/figcaption><\/figure>\n<p data-start=\"1149\" data-end=\"1374\">\n<h2 data-start=\"1381\" data-end=\"1413\">Key Concepts You Need to Know<\/h2>\n<h3 data-start=\"1415\" data-end=\"1436\">Defect Categories<\/h3>\n<ul data-start=\"1437\" data-end=\"1717\">\n<li data-start=\"1437\" data-end=\"1519\">\n<p data-start=\"1439\" data-end=\"1519\"><strong data-start=\"1439\" data-end=\"1452\">Critical:<\/strong> Safety\/legal hazards; AQL is typically <strong data-start=\"1492\" data-end=\"1499\">0.0<\/strong> (zero tolerance).<\/p>\n<\/li>\n<li data-start=\"1520\" data-end=\"1642\">\n<p data-start=\"1522\" data-end=\"1642\"><strong data-start=\"1522\" data-end=\"1532\">Major:<\/strong> Likely to make the product <strong data-start=\"1560\" data-end=\"1574\">unsellable<\/strong> or fail in use (e.g., functional issues, obvious cosmetic flaws).<\/p>\n<\/li>\n<li data-start=\"1643\" data-end=\"1717\">\n<p data-start=\"1645\" data-end=\"1717\"><strong data-start=\"1645\" data-end=\"1655\">Minor:<\/strong> Slight imperfections that <strong data-start=\"1682\" data-end=\"1698\">don\u2019t affect<\/strong> form\/fit\/function.<\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"1719\" data-end=\"1740\">Inspection Levels<\/h3>\n<ul data-start=\"1741\" data-end=\"1996\">\n<li data-start=\"1741\" data-end=\"1857\">\n<p data-start=\"1743\" data-end=\"1857\"><strong data-start=\"1743\" data-end=\"1768\">General I \/ II \/ III:<\/strong> Default intensity for most inspections. <strong data-start=\"1809\" data-end=\"1823\">General II<\/strong> is the standard starting point.<\/p>\n<\/li>\n<li data-start=\"1858\" data-end=\"1996\">\n<p data-start=\"1860\" data-end=\"1996\"><strong data-start=\"1860\" data-end=\"1883\">Special S-1 to S-4:<\/strong> Used for <strong data-start=\"1893\" data-end=\"1919\">small, targeted checks<\/strong> (e.g., labeling, color, special attributes) when a full sample isn\u2019t needed.<\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"1998\" data-end=\"2038\">AQL Values (Typical Starting Points)<\/h3>\n<ul data-start=\"2039\" data-end=\"2179\">\n<li data-start=\"2039\" data-end=\"2060\">\n<p data-start=\"2041\" data-end=\"2060\"><strong data-start=\"2041\" data-end=\"2054\">Critical:<\/strong> 0.0<\/p>\n<\/li>\n<li data-start=\"2061\" data-end=\"2079\">\n<p data-start=\"2063\" data-end=\"2079\"><strong data-start=\"2063\" data-end=\"2073\">Major:<\/strong> 2.5<\/p>\n<\/li>\n<li data-start=\"2080\" data-end=\"2179\">\n<p data-start=\"2082\" data-end=\"2179\"><strong data-start=\"2082\" data-end=\"2092\">Minor:<\/strong> 4.0<br data-start=\"2096\" data-end=\"2099\" \/>Adjust up\/down based on product risk, brand positioning, and regulatory context.<\/p>\n<\/li>\n<\/ul>\n<h2 data-start=\"2186\" data-end=\"2227\">How to Use an AQL Table (Step-by-Step)<\/h2>\n<h3 data-start=\"2229\" data-end=\"2253\">1) Define the Inputs<\/h3>\n<ul data-start=\"2254\" data-end=\"2396\">\n<li data-start=\"2254\" data-end=\"2293\">\n<p data-start=\"2256\" data-end=\"2293\"><strong data-start=\"2256\" data-end=\"2269\">Lot size:<\/strong> Example, 8,000 units.<\/p>\n<\/li>\n<li data-start=\"2294\" data-end=\"2346\">\n<p data-start=\"2296\" data-end=\"2346\"><strong data-start=\"2296\" data-end=\"2317\">Inspection level:<\/strong> Start with <strong data-start=\"2329\" data-end=\"2343\">General II<\/strong>.<\/p>\n<\/li>\n<li data-start=\"2347\" data-end=\"2396\">\n<p data-start=\"2349\" data-end=\"2396\"><strong data-start=\"2349\" data-end=\"2358\">AQLs:<\/strong> Critical 0.0 \/ Major 2.5 \/ Minor 4.0.<\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"2398\" data-end=\"2425\">2) Find the Code Letter<\/h3>\n<p data-start=\"2426\" data-end=\"2568\">Open the AQL table (ISO 2859-1 \/ ANSI Z1.4). In the <strong data-start=\"2478\" data-end=\"2492\">General II<\/strong> row and your <strong data-start=\"2506\" data-end=\"2518\">lot size<\/strong> column, find the <strong data-start=\"2536\" data-end=\"2551\">code letter<\/strong> (e.g., <strong data-start=\"2559\" data-end=\"2566\">\u201cL\u201d<\/strong>).<\/p>\n<h3 data-start=\"2570\" data-end=\"2597\">3) Read the Sample Size<\/h3>\n<p data-start=\"2598\" data-end=\"2706\">In the second part of the table, locate <strong data-start=\"2638\" data-end=\"2655\">code letter L<\/strong> to get the <strong data-start=\"2667\" data-end=\"2682\">sample size<\/strong> (for example, <strong data-start=\"2697\" data-end=\"2704\">200<\/strong>).<\/p>\n<h3 data-start=\"2708\" data-end=\"2738\">4) Apply AQLs to Get Ac\/Re<\/h3>\n<p data-start=\"2739\" data-end=\"2827\">For each defect class and its AQL, read the <strong data-start=\"2783\" data-end=\"2798\">Accept (Ac)<\/strong> and <strong data-start=\"2803\" data-end=\"2818\">Reject (Re)<\/strong> numbers:<\/p>\n<ul data-start=\"2828\" data-end=\"3019\">\n<li data-start=\"2828\" data-end=\"2907\">\n<p data-start=\"2830\" data-end=\"2907\"><strong data-start=\"2830\" data-end=\"2853\"><a href=\"https:\/\/amazingqualitycontrol.com\/glossary\/critical-defect\/\">Critical (0.0 AQL):<\/a><\/strong> <strong data-start=\"2854\" data-end=\"2864\">Ac = 0<\/strong>, <strong data-start=\"2866\" data-end=\"2876\">Re = 1<\/strong> (any critical defect fails).<\/p>\n<\/li>\n<li data-start=\"2908\" data-end=\"2964\">\n<p data-start=\"2910\" data-end=\"2964\"><strong data-start=\"2910\" data-end=\"2930\">Major (2.5 AQL):<\/strong> e.g., <strong data-start=\"2937\" data-end=\"2948\">Ac = 10<\/strong>, <strong data-start=\"2950\" data-end=\"2961\">Re = 11<\/strong>.<\/p>\n<\/li>\n<li data-start=\"2965\" data-end=\"3019\">\n<p data-start=\"2967\" data-end=\"3019\"><strong data-start=\"2967\" data-end=\"2987\">Minor (4.0 AQL):<\/strong> e.g., <strong data-start=\"2994\" data-end=\"3005\">Ac = 14<\/strong>, <strong data-start=\"3007\" data-end=\"3018\">Re = 15<\/strong>.<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"3021\" data-end=\"3106\"><em data-start=\"3021\" data-end=\"3106\">(Exact Ac\/Re depends on the standard table; the values above illustrate the logic.)<\/em><\/p>\n<h3 data-start=\"3108\" data-end=\"3133\">5) Inspect and Decide<\/h3>\n<ul data-start=\"3134\" data-end=\"3286\">\n<li data-start=\"3134\" data-end=\"3178\">\n<p data-start=\"3136\" data-end=\"3178\">Inspect <strong data-start=\"3144\" data-end=\"3151\">200<\/strong> randomly selected units.<\/p>\n<\/li>\n<li data-start=\"3179\" data-end=\"3229\">\n<p data-start=\"3181\" data-end=\"3229\">Count critical\/major\/minor defects separately.<\/p>\n<\/li>\n<li data-start=\"3230\" data-end=\"3286\">\n<p data-start=\"3232\" data-end=\"3286\">If any defect class <strong data-start=\"3252\" data-end=\"3266\">exceeds Re<\/strong>, the lot <strong data-start=\"3276\" data-end=\"3285\">fails<\/strong>.<\/p>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<figure id=\"attachment_2778\" aria-describedby=\"caption-attachment-2778\" style=\"width: 900px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" class=\"size-full wp-image-2778\" src=\"https:\/\/amazingqualitycontrol.com\/wp-content\/uploads\/2025\/04\/AQL.jpg\" alt=\"AQL chart data review quality control\" width=\"900\" height=\"600\" title=\"\" srcset=\"https:\/\/amazingqualitycontrol.com\/wp-content\/uploads\/2025\/04\/AQL.jpg 900w, https:\/\/amazingqualitycontrol.com\/wp-content\/uploads\/2025\/04\/AQL-300x200.jpg 300w, https:\/\/amazingqualitycontrol.com\/wp-content\/uploads\/2025\/04\/AQL-768x512.jpg 768w\" sizes=\"(max-width: 900px) 100vw, 900px\" \/><figcaption id=\"caption-attachment-2778\" class=\"wp-caption-text\">AQL chart data review quality control<\/figcaption><\/figure>\n<p>&nbsp;<\/p>\n<h2 data-start=\"3293\" data-end=\"3337\">Practical Tips for Importers and QA Teams<\/h2>\n<h3 data-start=\"3339\" data-end=\"3366\">Choosing the Right AQLs<\/h3>\n<ul data-start=\"3367\" data-end=\"3592\">\n<li data-start=\"3367\" data-end=\"3468\">\n<p data-start=\"3369\" data-end=\"3468\"><strong data-start=\"3369\" data-end=\"3417\">High risk \/ regulated goods (toys, medical):<\/strong> Tight AQLs (e.g., Major 1.0\u20131.5; Minor 2.5\u20134.0).<\/p>\n<\/li>\n<li data-start=\"3469\" data-end=\"3526\">\n<p data-start=\"3471\" data-end=\"3526\"><strong data-start=\"3471\" data-end=\"3490\">Premium brands:<\/strong> Lower AQLs to protect perception.<\/p>\n<\/li>\n<li data-start=\"3527\" data-end=\"3592\">\n<p data-start=\"3529\" data-end=\"3592\"><strong data-start=\"3529\" data-end=\"3549\">Commodity goods:<\/strong> Standard (Major 2.5, Minor 4.0) is common.<\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"3594\" data-end=\"3637\">When to Use Special Levels (S-1 to S-4)<\/h3>\n<ul data-start=\"3638\" data-end=\"3723\">\n<li data-start=\"3638\" data-end=\"3723\">\n<p data-start=\"3640\" data-end=\"3723\"><strong data-start=\"3640\" data-end=\"3685\">Labeling, barcodes, inserts, quick checks<\/strong> where a smaller sample is sufficient.<\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"3725\" data-end=\"3763\">Integrate AQL with QA (Prevention)<\/h3>\n<ul data-start=\"3764\" data-end=\"4082\">\n<li data-start=\"3764\" data-end=\"4082\">\n<p data-start=\"3766\" data-end=\"3828\"><a href=\"https:\/\/amazingqualitycontrol.com\/acceptable-quality-level\/\">AQL<\/a> is <strong data-start=\"3773\" data-end=\"3786\">detection<\/strong>; combine it with <strong data-start=\"3804\" data-end=\"3821\">QA prevention<\/strong> tools:<\/p>\n<ul data-start=\"3831\" data-end=\"4082\">\n<li data-start=\"3831\" data-end=\"3890\">\n<p data-start=\"3833\" data-end=\"3890\"><strong data-start=\"3833\" data-end=\"3848\">Clear specs<\/strong> (dimensions, tolerances, Pantone, BOM).<\/p>\n<\/li>\n<li data-start=\"3893\" data-end=\"3940\">\n<p data-start=\"3895\" data-end=\"3940\"><strong data-start=\"3895\" data-end=\"3912\">Golden sample<\/strong> approved by both parties.<\/p>\n<\/li>\n<li data-start=\"3943\" data-end=\"3992\">\n<p data-start=\"3945\" data-end=\"3992\"><strong data-start=\"3945\" data-end=\"3969\">PFMEA &amp; Control Plan<\/strong> for process control.<\/p>\n<\/li>\n<li data-start=\"3995\" data-end=\"4050\">\n<p data-start=\"3997\" data-end=\"4050\"><strong data-start=\"3997\" data-end=\"4006\">DUPRO<\/strong> (During-Production) to catch drift early.<\/p>\n<\/li>\n<li data-start=\"4053\" data-end=\"4082\">\n<p data-start=\"4055\" data-end=\"4082\"><strong data-start=\"4055\" data-end=\"4066\">CAPA\/8D<\/strong> after failures.<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2 data-start=\"4089\" data-end=\"4107\">Worked Examples<\/h2>\n<h3 data-start=\"4109\" data-end=\"4154\">Example A \u2014 Medium Lot, Standard Settings<\/h3>\n<ul data-start=\"4155\" data-end=\"4485\">\n<li data-start=\"4155\" data-end=\"4184\">\n<p data-start=\"4157\" data-end=\"4184\"><strong data-start=\"4157\" data-end=\"4170\">Lot size:<\/strong> 3,200 units<\/p>\n<\/li>\n<li data-start=\"4185\" data-end=\"4240\">\n<p data-start=\"4187\" data-end=\"4240\"><strong data-start=\"4187\" data-end=\"4197\">Level:<\/strong> General II \u2192 <strong data-start=\"4211\" data-end=\"4228\">Code letter K<\/strong> (example)<\/p>\n<\/li>\n<li data-start=\"4241\" data-end=\"4269\">\n<p data-start=\"4243\" data-end=\"4269\"><strong data-start=\"4243\" data-end=\"4259\">Sample size:<\/strong> <strong data-start=\"4260\" data-end=\"4267\">125<\/strong><\/p>\n<\/li>\n<li data-start=\"4270\" data-end=\"4320\">\n<p data-start=\"4272\" data-end=\"4320\"><strong data-start=\"4272\" data-end=\"4281\">AQLs:<\/strong> Critical 0.0 \/ Major 2.5 \/ Minor 4.0<\/p>\n<\/li>\n<li data-start=\"4321\" data-end=\"4485\">\n<p data-start=\"4323\" data-end=\"4350\"><strong data-start=\"4323\" data-end=\"4348\">Ac\/Re (illustrative):<\/strong><\/p>\n<ul data-start=\"4353\" data-end=\"4485\">\n<li data-start=\"4353\" data-end=\"4374\">\n<p data-start=\"4355\" data-end=\"4374\">Critical: <strong data-start=\"4365\" data-end=\"4372\">0\/1<\/strong><\/p>\n<\/li>\n<li data-start=\"4377\" data-end=\"4395\">\n<p data-start=\"4379\" data-end=\"4395\">Major: <strong data-start=\"4386\" data-end=\"4393\">7\/8<\/strong><\/p>\n<\/li>\n<li data-start=\"4398\" data-end=\"4485\">\n<p data-start=\"4400\" data-end=\"4485\">Minor: <strong data-start=\"4407\" data-end=\"4416\">10\/11<\/strong><br data-start=\"4416\" data-end=\"4419\" \/><strong data-start=\"4419\" data-end=\"4432\">Decision:<\/strong> If you find 8 <a href=\"https:\/\/amazingqualitycontrol.com\/glossary\/major-defect\/\">major defects<\/a> \u2192 <strong data-start=\"4463\" data-end=\"4471\">Fail<\/strong> (Re reached).<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3 data-start=\"4487\" data-end=\"4527\">Example B \u2014 Small Lot, Special Check<\/h3>\n<ul data-start=\"4528\" data-end=\"4741\">\n<li data-start=\"4528\" data-end=\"4555\">\n<p data-start=\"4530\" data-end=\"4555\"><strong data-start=\"4530\" data-end=\"4543\">Lot size:<\/strong> 420 units<\/p>\n<\/li>\n<li data-start=\"4556\" data-end=\"4624\">\n<p data-start=\"4558\" data-end=\"4624\"><strong data-start=\"4558\" data-end=\"4582\">Level (labels only):<\/strong> <strong data-start=\"4583\" data-end=\"4590\">S-3<\/strong> \u2192 smaller sample (e.g., <strong data-start=\"4615\" data-end=\"4621\">20<\/strong>)<\/p>\n<\/li>\n<li data-start=\"4625\" data-end=\"4659\">\n<p data-start=\"4627\" data-end=\"4659\"><strong data-start=\"4627\" data-end=\"4653\">AQL (labels as minor):<\/strong> 4.0<\/p>\n<\/li>\n<li data-start=\"4660\" data-end=\"4741\">\n<p data-start=\"4662\" data-end=\"4741\"><strong data-start=\"4662\" data-end=\"4687\">Ac\/Re (illustrative):<\/strong> <strong data-start=\"4688\" data-end=\"4695\">1\/2<\/strong><br data-start=\"4695\" data-end=\"4698\" \/><strong data-start=\"4698\" data-end=\"4711\">Decision:<\/strong> 2 labeling errors \u2192 <strong data-start=\"4732\" data-end=\"4740\">Fail<\/strong>.<\/p>\n<\/li>\n<\/ul>\n<blockquote data-start=\"4743\" data-end=\"4882\">\n<p data-start=\"4745\" data-end=\"4882\"><strong data-start=\"4745\" data-end=\"4754\">Note:<\/strong> Always consult the official ISO 2859-1 \/ ANSI Z1.4 tables your team or provider uses; Ac\/Re values vary by sample size and AQL.<\/p>\n<\/blockquote>\n<h2 data-start=\"4889\" data-end=\"4916\">Common Mistakes to Avoid<\/h2>\n<ul data-start=\"4918\" data-end=\"5330\">\n<li data-start=\"4918\" data-end=\"5025\">\n<p data-start=\"4920\" data-end=\"5025\"><strong data-start=\"4920\" data-end=\"4952\">No alignment on definitions:<\/strong> If \u201cmajor vs minor\u201d isn\u2019t defined in writing, disputes are inevitable.<\/p>\n<\/li>\n<li data-start=\"5026\" data-end=\"5110\">\n<p data-start=\"5028\" data-end=\"5110\"><strong data-start=\"5028\" data-end=\"5047\">Mixing defects:<\/strong> Track counts <strong data-start=\"5061\" data-end=\"5073\">by class<\/strong>; do not lump all defects together.<\/p>\n<\/li>\n<li data-start=\"5111\" data-end=\"5187\">\n<p data-start=\"5113\" data-end=\"5187\"><strong data-start=\"5113\" data-end=\"5132\">Skipping DUPRO:<\/strong> Waiting for final inspection lets problems multiply.<\/p>\n<\/li>\n<li data-start=\"5188\" data-end=\"5261\">\n<p data-start=\"5190\" data-end=\"5261\"><strong data-start=\"5190\" data-end=\"5217\">Changing AQL mid-order:<\/strong> AQLs must be fixed <strong data-start=\"5237\" data-end=\"5247\">before<\/strong> production.<\/p>\n<\/li>\n<li data-start=\"5262\" data-end=\"5330\">\n<p data-start=\"5264\" data-end=\"5330\"><strong data-start=\"5264\" data-end=\"5288\">Non-random sampling:<\/strong> Convenience sampling invalidates results.<\/p>\n<\/li>\n<\/ul>\n<h2 data-start=\"5337\" data-end=\"5354\">Advanced Notes<\/h2>\n<h3 data-start=\"5356\" data-end=\"5390\">Tightened \/ Reduced Inspection<\/h3>\n<p data-start=\"5391\" data-end=\"5568\">Standards include switching rules: if recent lots fail, move to <strong data-start=\"5455\" data-end=\"5468\">tightened<\/strong> inspection; if they pass consistently, move to <strong data-start=\"5516\" data-end=\"5527\">reduced<\/strong>. This keeps effort proportional to risk.<\/p>\n<h3 data-start=\"5570\" data-end=\"5601\">Zero Acceptance Plans (C=0)<\/h3>\n<p data-start=\"5602\" data-end=\"5763\">For critical safety items, some buyers use <strong data-start=\"5645\" data-end=\"5652\">C=0<\/strong> (no critical defects accepted and very small acceptance for majors\/minors). This is stricter than typical AQL.<\/p>\n<h3 data-start=\"5765\" data-end=\"5805\">Integration with Capability (Cp\/Cpk)<\/h3>\n<p data-start=\"5806\" data-end=\"5958\">Mature suppliers pair AQL with <strong data-start=\"5837\" data-end=\"5844\">SPC<\/strong> and capability goals (e.g., <strong data-start=\"5873\" data-end=\"5887\">Cpk \u2265 1.33<\/strong> pre-launch), reducing defect creation rather than merely detecting it.<\/p>\n<article class=\"text-token-text-primary w-full focus:outline-none [--shadow-height:45px] has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) [&amp;:has([data-writing-block])&gt;*]:pointer-events-auto [content-visibility:auto] supports-[content-visibility:auto]:[contain-intrinsic-size:auto_100lvh] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" tabindex=\"-1\" data-turn-id=\"613b79c8-fb8f-4af3-893d-fe34f751c620\" data-testid=\"conversation-turn-252\" data-scroll-anchor=\"true\" data-turn=\"assistant\">\n<div class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:--spacing(4)] thread-sm:[--thread-content-margin:--spacing(6)] thread-lg:[--thread-content-margin:--spacing(16)] px-(--thread-content-margin)\">\n<div class=\"[--thread-content-max-width:40rem] thread-lg:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\" tabindex=\"-1\">\n<div class=\"flex max-w-full flex-col grow\">\n<div class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal [.text-message+&amp;]:mt-1\" dir=\"auto\" data-message-author-role=\"assistant\" data-message-id=\"a34703ec-833d-4b55-88df-c02a8f94b572\" data-message-model-slug=\"gpt-5-thinking\">\n<div class=\"flex w-full flex-col gap-1 empty:hidden first:pt-[1px]\">\n<div class=\"markdown prose dark:prose-invert w-full break-words light markdown-new-styling\">\n<h2 data-start=\"10980\" data-end=\"11017\">Quick Checklist for Implementation<\/h2>\n<ul class=\"contains-task-list\" data-start=\"11019\" data-end=\"11350\">\n<li class=\"task-list-item\" data-start=\"11019\" data-end=\"11077\">\n<p data-start=\"11025\" data-end=\"11077\"><input disabled=\"disabled\" type=\"checkbox\" \/> Agree AQLs by defect class (Critical\/Major\/Minor).<\/p>\n<\/li>\n<li class=\"task-list-item\" data-start=\"11078\" data-end=\"11131\">\n<p data-start=\"11084\" data-end=\"11131\"><input disabled=\"disabled\" type=\"checkbox\" \/> Fix inspection level (start with General II).<\/p>\n<\/li>\n<li class=\"task-list-item\" data-start=\"11132\" data-end=\"11192\">\n<p data-start=\"11138\" data-end=\"11192\"><input disabled=\"disabled\" type=\"checkbox\" \/> Embed Ac\/Re numbers in the <strong data-start=\"11165\" data-end=\"11189\">PO\/Quality Agreement<\/strong>.<\/p>\n<\/li>\n<li class=\"task-list-item\" data-start=\"11193\" data-end=\"11264\">\n<p data-start=\"11199\" data-end=\"11264\"><input disabled=\"disabled\" type=\"checkbox\" \/> Ensure <strong data-start=\"11206\" data-end=\"11225\">random sampling<\/strong> and separate counts by defect class.<\/p>\n<\/li>\n<li class=\"task-list-item\" data-start=\"11265\" data-end=\"11350\">\n<p data-start=\"11271\" data-end=\"11350\"><input disabled=\"disabled\" type=\"checkbox\" \/> Pair AQL detection with <strong data-start=\"11295\" data-end=\"11312\">QA prevention<\/strong> (PFMEA, Control Plan, DUPRO, CAPA).<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"11352\" data-end=\"11512\">With the AQL table used correctly\u2014and supported by strong preventive QA\u2014your inspections become faster, fairer, and far more effective at protecting your brand.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"z-0 flex min-h-[46px] justify-start\"><\/div>\n<\/div>\n<\/div>\n<\/article>\n<h2 data-start=\"5965\" data-end=\"5983\">FAQ \u2014 AQL Table<\/h2>\n<p data-start=\"5985\" data-end=\"6190\"><strong data-start=\"5985\" data-end=\"6019\">What does \u201cAQL\u201d actually mean?<\/strong><br data-start=\"6019\" data-end=\"6022\" \/>It\u2019s the <strong data-start=\"6031\" data-end=\"6080\">maximum defect level you\u2019re willing to accept<\/strong> in a lot, expressed per defect class, used to set <strong data-start=\"6131\" data-end=\"6148\">accept\/reject<\/strong> criteria on a statistically valid sample.<\/p>\n<p data-start=\"6192\" data-end=\"6424\"><strong data-start=\"6192\" data-end=\"6233\">Which inspection level should I pick?<\/strong><br data-start=\"6233\" data-end=\"6236\" \/>Start with <strong data-start=\"6247\" data-end=\"6261\">General II<\/strong>. Use <strong data-start=\"6267\" data-end=\"6282\">General III<\/strong> for higher risk or more scrutiny, and <strong data-start=\"6321\" data-end=\"6334\">General I<\/strong> if you need a lighter check. Use <strong data-start=\"6368\" data-end=\"6386\">Special levels<\/strong> (S-1 to S-4) for targeted attributes.<\/p>\n<p data-start=\"6426\" data-end=\"6584\"><strong data-start=\"6426\" data-end=\"6478\">Can I have different AQLs for different defects?<\/strong><br data-start=\"6478\" data-end=\"6481\" \/>Yes. Most buyers set <strong data-start=\"6502\" data-end=\"6518\">Critical 0.0<\/strong>, <strong data-start=\"6520\" data-end=\"6533\">Major 2.5<\/strong>, <strong data-start=\"6535\" data-end=\"6548\">Minor 4.0<\/strong> as a baseline, then adjust by risk.<\/p>\n<p data-start=\"6586\" data-end=\"6746\"><strong data-start=\"6586\" data-end=\"6646\">Does passing AQL guarantee zero defects in the shipment?<\/strong><br data-start=\"6646\" data-end=\"6649\" \/>No. AQL gives <strong data-start=\"6663\" data-end=\"6689\">statistical confidence<\/strong>, not certainty. It\u2019s risk-based control, not perfection.<\/p>\n<p data-start=\"6748\" data-end=\"6895\"><strong data-start=\"6748\" data-end=\"6774\">How big is the sample?<\/strong><br data-start=\"6774\" data-end=\"6777\" \/>Depends on <strong data-start=\"6788\" data-end=\"6800\">lot size<\/strong> and <strong data-start=\"6805\" data-end=\"6825\">inspection level<\/strong>. The table converts these into a <strong data-start=\"6859\" data-end=\"6874\">code letter<\/strong> and <strong data-start=\"6879\" data-end=\"6894\">sample size<\/strong>.<\/p>\n<p data-start=\"6897\" data-end=\"7022\"><strong data-start=\"6897\" data-end=\"6940\">Is AQL the same as acceptance sampling?<\/strong><br data-start=\"6940\" data-end=\"6943\" \/>AQL is part of <strong data-start=\"6958\" data-end=\"6987\">acceptance sampling plans<\/strong> defined in ISO 2859-1 \/ ANSI Z1.4.<\/p>\n<p data-start=\"7024\" data-end=\"7202\"><strong data-start=\"7024\" data-end=\"7058\">How do I reduce failure rates?<\/strong><br data-start=\"7058\" data-end=\"7061\" \/>Pair AQL with <strong data-start=\"7075\" data-end=\"7089\">prevention<\/strong>: tighter specs, better supplier qualification, in-process controls, and <strong data-start=\"7162\" data-end=\"7171\">DUPRO<\/strong>. Use <strong data-start=\"7177\" data-end=\"7188\">CAPA\/8D<\/strong> after issues.<\/p>\n","protected":false},"featured_media":6064,"template":"","class_list":["post-6063","glossary","type-glossary","status-publish","has-post-thumbnail","hentry"],"_links":{"self":[{"href":"https:\/\/amazingqualitycontrol.com\/fr\/wp-json\/wp\/v2\/glossary\/6063","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/amazingqualitycontrol.com\/fr\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/amazingqualitycontrol.com\/fr\/wp-json\/wp\/v2\/types\/glossary"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/amazingqualitycontrol.com\/fr\/wp-json\/wp\/v2\/media\/6064"}],"wp:attachment":[{"href":"https:\/\/amazingqualitycontrol.com\/fr\/wp-json\/wp\/v2\/media?parent=6063"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}