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You want to perform a product inspection?
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You would like your procedure to be statistically valid?
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Enter your information on this page and you'll get the info you need!
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1. Find how many samples to draw at random
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Total quantity of products:
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pieces (not sets or pairs etc.)
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What inspection level do you choose?
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What kind of product is it?
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2. Find how many defects are acceptable
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Defects are usually split into three categories:
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Critical defects are a non-compliance with applicable law and/or might hurt users.
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Major defects would cause a consumer/user to refuse buying the product.
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Minor defects are a non-respect of specifications, but some consumers would not mind.
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AQL for critical defects
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AQL for major defects
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AQL for minor defects
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What AQL do buyers often choose?
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For most consumer products: 0 for critical, 2.5 for major, and 4.0 for minor.
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For more valuable items: 0 for critical, 1.0 or 1.5 for major, and 2.5 or 4.0 for minor.
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You want to learn more about AQL and inspection levels?
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Read this article: Quality Control Basics
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