{"id":113,"date":"2026-10-21T10:00:00","date_gmt":"2026-10-21T05:00:00","guid":{"rendered":"https:\/\/www.prias.net\/?page_id=113"},"modified":"2026-10-21T10:00:00","modified_gmt":"2026-10-21T05:00:00","slug":"aql-table","status":"publish","type":"page","link":"https:\/\/www.prias.net\/?page_id=113","title":{"rendered":"AQL Table"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">AQL (Acceptable Quality Limit) tables tell inspectors how many pieces to check and how many defects are allowed. The tables below follow ANSI\/ASQ Z1.4-2008 (US) and ISO 2859-1 (EU) for normal inspection.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Table I: Sample size by lot size<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Find your lot size, then read across for your inspection level. General level II is the default. Special levels S1 to S4 are used for measurements and tests.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Lot size<\/th><th>S1<\/th><th>S2<\/th><th>S3<\/th><th>S4<\/th><th>I<\/th><th>II<\/th><th>III<\/th><\/tr><\/thead><tbody><tr><td>2 to 8<\/td><td>2<\/td><td>2<\/td><td>2<\/td><td>2<\/td><td>2<\/td><td>2<\/td><td>3<\/td><\/tr><tr><td>9 to 15<\/td><td>2<\/td><td>2<\/td><td>2<\/td><td>2<\/td><td>2<\/td><td>3<\/td><td>5<\/td><\/tr><tr><td>16 to 25<\/td><td>2<\/td><td>2<\/td><td>3<\/td><td>3<\/td><td>3<\/td><td>5<\/td><td>8<\/td><\/tr><tr><td>26 to 50<\/td><td>2<\/td><td>3<\/td><td>3<\/td><td>5<\/td><td>5<\/td><td>8<\/td><td>13<\/td><\/tr><tr><td>51 to 90<\/td><td>3<\/td><td>3<\/td><td>5<\/td><td>5<\/td><td>5<\/td><td>13<\/td><td>20<\/td><\/tr><tr><td>91 to 150<\/td><td>3<\/td><td>3<\/td><td>5<\/td><td>8<\/td><td>8<\/td><td>20<\/td><td>32<\/td><\/tr><tr><td>151 to 280<\/td><td>3<\/td><td>5<\/td><td>8<\/td><td>13<\/td><td>13<\/td><td>32<\/td><td>50<\/td><\/tr><tr><td>281 to 500<\/td><td>3<\/td><td>5<\/td><td>8<\/td><td>13<\/td><td>20<\/td><td>50<\/td><td>80<\/td><\/tr><tr><td>501 to 1,200<\/td><td>5<\/td><td>5<\/td><td>13<\/td><td>20<\/td><td>32<\/td><td>80<\/td><td>125<\/td><\/tr><tr><td>1,201 to 3,200<\/td><td>5<\/td><td>8<\/td><td>13<\/td><td>32<\/td><td>50<\/td><td>125<\/td><td>200<\/td><\/tr><tr><td>3,201 to 10,000<\/td><td>5<\/td><td>8<\/td><td>20<\/td><td>32<\/td><td>80<\/td><td>200<\/td><td>315<\/td><\/tr><tr><td>10,001 to 35,000<\/td><td>5<\/td><td>8<\/td><td>20<\/td><td>50<\/td><td>125<\/td><td>315<\/td><td>500<\/td><\/tr><tr><td>35,001 to 150,000<\/td><td>8<\/td><td>13<\/td><td>32<\/td><td>80<\/td><td>200<\/td><td>500<\/td><td>800<\/td><\/tr><tr><td>150,001 to 500,000<\/td><td>8<\/td><td>13<\/td><td>32<\/td><td>80<\/td><td>315<\/td><td>800<\/td><td>1250<\/td><\/tr><tr><td>500,001 and over<\/td><td>8<\/td><td>13<\/td><td>50<\/td><td>125<\/td><td>500<\/td><td>1250<\/td><td>2000<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Table II-A: Accept \/ Reject numbers (normal inspection)<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Read down to your sample size and across to your AQL. Each cell shows Ac\/Re: accept the lot if defects found are at or below Ac, reject if at or above Re. \u2193 means use the first Ac\/Re below it (a larger sample size). \u2191 means use the Ac\/Re above it (a smaller sample size, 21\/22 at most).<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>AQL<\/th><th>2<\/th><th>3<\/th><th>5<\/th><th>8<\/th><th>13<\/th><th>20<\/th><th>32<\/th><th>50<\/th><th>80<\/th><th>125<\/th><th>200<\/th><th>315<\/th><th>500<\/th><th>800<\/th><th>1250<\/th><th>2000<\/th><\/tr><\/thead><tbody><tr><td>0.065<\/td><td>\u2193<\/td><td>\u2193<\/td><td>\u2193<\/td><td>\u2193<\/td><td>\u2193<\/td><td>\u2193<\/td><td>\u2193<\/td><td>\u2193<\/td><td>\u2193<\/td><td>\u2193<\/td><td>\u2193<\/td><td>\u2193<\/td><td>0\/1<\/td><td>1\/2<\/td><td>2\/3<\/td><td>3\/4<\/td><\/tr><tr><td>0.10<\/td><td>\u2193<\/td><td>\u2193<\/td><td>\u2193<\/td><td>\u2193<\/td><td>\u2193<\/td><td>\u2193<\/td><td>\u2193<\/td><td>\u2193<\/td><td>\u2193<\/td><td>\u2193<\/td><td>\u2193<\/td><td>0\/1<\/td><td>1\/2<\/td><td>2\/3<\/td><td>3\/4<\/td><td>5\/6<\/td><\/tr><tr><td>0.15<\/td><td>\u2193<\/td><td>\u2193<\/td><td>\u2193<\/td><td>\u2193<\/td><td>\u2193<\/td><td>\u2193<\/td><td>\u2193<\/td><td>\u2193<\/td><td>\u2193<\/td><td>\u2193<\/td><td>0\/1<\/td><td>1\/2<\/td><td>2\/3<\/td><td>3\/4<\/td><td>5\/6<\/td><td>7\/8<\/td><\/tr><tr><td>0.25<\/td><td>\u2193<\/td><td>\u2193<\/td><td>\u2193<\/td><td>\u2193<\/td><td>\u2193<\/td><td>\u2193<\/td><td>\u2193<\/td><td>\u2193<\/td><td>\u2193<\/td><td>0\/1<\/td><td>1\/2<\/td><td>2\/3<\/td><td>3\/4<\/td><td>5\/6<\/td><td>7\/8<\/td><td>10\/11<\/td><\/tr><tr><td>0.40<\/td><td>\u2193<\/td><td>\u2193<\/td><td>\u2193<\/td><td>\u2193<\/td><td>\u2193<\/td><td>\u2193<\/td><td>\u2193<\/td><td>\u2193<\/td><td>0\/1<\/td><td>1\/2<\/td><td>2\/3<\/td><td>3\/4<\/td><td>5\/6<\/td><td>7\/8<\/td><td>10\/11<\/td><td>14\/15<\/td><\/tr><tr><td>0.65<\/td><td>\u2193<\/td><td>\u2193<\/td><td>\u2193<\/td><td>\u2193<\/td><td>\u2193<\/td><td>\u2193<\/td><td>\u2193<\/td><td>0\/1<\/td><td>1\/2<\/td><td>2\/3<\/td><td>3\/4<\/td><td>5\/6<\/td><td>7\/8<\/td><td>10\/11<\/td><td>14\/15<\/td><td>21\/22<\/td><\/tr><tr><td>1.0<\/td><td>\u2193<\/td><td>\u2193<\/td><td>\u2193<\/td><td>\u2193<\/td><td>\u2193<\/td><td>\u2193<\/td><td>0\/1<\/td><td>1\/2<\/td><td>2\/3<\/td><td>3\/4<\/td><td>5\/6<\/td><td>7\/8<\/td><td>10\/11<\/td><td>14\/15<\/td><td>21\/22<\/td><td>\u2191<\/td><\/tr><tr><td>1.5<\/td><td>\u2193<\/td><td>\u2193<\/td><td>\u2193<\/td><td>\u2193<\/td><td>\u2193<\/td><td>0\/1<\/td><td>1\/2<\/td><td>2\/3<\/td><td>3\/4<\/td><td>5\/6<\/td><td>7\/8<\/td><td>10\/11<\/td><td>14\/15<\/td><td>21\/22<\/td><td>\u2191<\/td><td>\u2191<\/td><\/tr><tr><td>2.5<\/td><td>\u2193<\/td><td>\u2193<\/td><td>\u2193<\/td><td>\u2193<\/td><td>0\/1<\/td><td>1\/2<\/td><td>2\/3<\/td><td>3\/4<\/td><td>5\/6<\/td><td>7\/8<\/td><td>10\/11<\/td><td>14\/15<\/td><td>21\/22<\/td><td>\u2191<\/td><td>\u2191<\/td><td>\u2191<\/td><\/tr><tr><td>4.0<\/td><td>\u2193<\/td><td>\u2193<\/td><td>\u2193<\/td><td>0\/1<\/td><td>1\/2<\/td><td>2\/3<\/td><td>3\/4<\/td><td>5\/6<\/td><td>7\/8<\/td><td>10\/11<\/td><td>14\/15<\/td><td>21\/22<\/td><td>\u2191<\/td><td>\u2191<\/td><td>\u2191<\/td><td>\u2191<\/td><\/tr><tr><td>6.5<\/td><td>\u2193<\/td><td>\u2193<\/td><td>0\/1<\/td><td>1\/2<\/td><td>2\/3<\/td><td>3\/4<\/td><td>5\/6<\/td><td>7\/8<\/td><td>10\/11<\/td><td>14\/15<\/td><td>21\/22<\/td><td>\u2191<\/td><td>\u2191<\/td><td>\u2191<\/td><td>\u2191<\/td><td>\u2191<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Quick reference<\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>General level I:<\/strong> smaller sample, for low risk and a good supplier history.<\/li><li><strong>General level II:<\/strong> standard, used in most inspections.<\/li><li><strong>General level III:<\/strong> larger sample, for high risk or past quality problems.<\/li><li><strong>Common AQL:<\/strong> Critical 0, Major 2.5, Minor 4.0.<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Worked example<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Lot size 20,000, general level II, Major AQL 2.5 and Minor AQL 4.0. The sample size is 315 pieces. Major: accept up to 14 defects, reject at 15. Minor: accept up to 21 defects, reject at 22.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Want it calculated for you? Use the <a href=\"\/quality-standards\/aql-calculator\/\">AQL Calculator<\/a>.<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"\/contact-us\/\">Get a Free Quote<\/a><\/div>\n\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"\/contact-us\/#sample-report\">Request Sample Inspection Report<\/a><\/div>\n<\/div>\n\n\n","protected":false},"excerpt":{"rendered":"<p>AQL (Acceptable Quality Limit) tables tell inspectors how many pieces to check and how many defects are allowed. The tables below follow ANSI\/ASQ Z1.4-2008 (US) and ISO 2859-1 (EU) for normal inspection. Table I: Sample size by lot size Find your lot size, then read across for your inspection level. General level II is the&hellip; <br \/> <a class=\"read-more\" href=\"https:\/\/www.prias.net\/?page_id=113\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":112,"menu_order":13,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-113","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.prias.net\/index.php?rest_route=\/wp\/v2\/pages\/113","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.prias.net\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.prias.net\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.prias.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.prias.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=113"}],"version-history":[{"count":0,"href":"https:\/\/www.prias.net\/index.php?rest_route=\/wp\/v2\/pages\/113\/revisions"}],"up":[{"embeddable":true,"href":"https:\/\/www.prias.net\/index.php?rest_route=\/wp\/v2\/pages\/112"}],"wp:attachment":[{"href":"https:\/\/www.prias.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=113"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}