{"id":116,"date":"2026-10-21T10:00:00","date_gmt":"2026-10-21T05:00:00","guid":{"rendered":"https:\/\/www.prias.net\/?page_id=116"},"modified":"2026-10-21T10:00:00","modified_gmt":"2026-10-21T05:00:00","slug":"aql-terms","status":"publish","type":"page","link":"https:\/\/www.prias.net\/?page_id=116","title":{"rendered":"AQL Terms"},"content":{"rendered":"\n

Common quality control and inspection terms, in plain language.<\/p>\n\n\n\n

Term<\/th>Meaning<\/th><\/tr><\/thead>
AQL (Acceptable Quality Limit)<\/td>The worst average defect level you are willing to accept in a lot. A lower AQL is stricter.<\/td><\/tr>
Lot (batch)<\/td>The total quantity being inspected, such as one PO or one style.<\/td><\/tr>
Sample size<\/td>The number of pieces inspected from the lot, set by lot size and inspection level.<\/td><\/tr>
Inspection level<\/td>General I, II, III (visual checks) or special S1 to S4 (measurements and tests). It changes the sample size.<\/td><\/tr>
Critical defect<\/td>A defect that is unsafe or illegal for the user. Usually AQL 0, no tolerance.<\/td><\/tr>
Major defect<\/td>A defect that makes the product unusable or likely to be returned. Common AQL 2.5.<\/td><\/tr>
Minor defect<\/td>A small deviation that does not affect use. Common AQL 4.0.<\/td><\/tr>
Acceptance number (Ac)<\/td>Maximum defects allowed in the sample for the lot to pass.<\/td><\/tr>
Rejection number (Re)<\/td>The number of defects at which the lot fails.<\/td><\/tr>
Normal inspection<\/td>The standard plan used when quality is average.<\/td><\/tr>
Tightened inspection<\/td>A stricter plan used after repeated failures.<\/td><\/tr>
Reduced inspection<\/td>A lighter plan allowed after consistent good results.<\/td><\/tr>
Sample size code letter<\/td>The letter (A to R) linking lot size and level to a sample size.<\/td><\/tr>
Random sampling<\/td>Picking pieces and cartons without bias so the sample represents the lot.<\/td><\/tr>
Defective unit<\/td>A piece with one or more defects.<\/td><\/tr>
Pre-shipment inspection (PSI)<\/td>Final random inspection when goods are packed and ready to ship.<\/td><\/tr>
DUPRO \/ inline inspection<\/td>Inspection while production is running.<\/td><\/tr>
Golden sample<\/td>The approved sample that production must match.<\/td><\/tr>
Tech pack<\/td>The document with the product specifications, measurements and materials.<\/td><\/tr>
Packing list<\/td>The list of styles, colours, sizes, quantities and cartons in a shipment.<\/td><\/tr>
Tolerance<\/td>The allowed difference from a specified measurement.<\/td><\/tr>
Shade variation<\/td>A visible colour difference between pieces or panels.<\/td><\/tr>
Corrective action (CAPA)<\/td>Steps the factory takes to fix a defect and stop it recurring.<\/td><\/tr>
Points per 100 sq yd<\/td>The result of 4 point fabric inspection used to grade fabric rolls.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
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Common quality control and inspection terms, in plain language. Term Meaning AQL (Acceptable Quality Limit) The worst average defect level you are willing to accept in a lot. A lower AQL is stricter. Lot (batch) The total quantity being inspected, such as one PO or one style. Sample size The number of pieces inspected from…
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