How to Use the AQL Table for Product Sampling and Inspection

How to use the AQL table (also commonly known as the AQL chart) for product sampling and inspection:
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This video appeared originally on our website:
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This video covers the following topics related to product inspection and quality control:
- Why it's usually better to inspect a sample of an order, rather than the entire order
- What is AQL and what is the AQL chart
- Calculating a sample size with the AQL chart
- Calculating the number of defects allowed in a sample using the AQL chart
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[@cadtoby3300]

This was a great video - It gave me exactly the information I needed and was presented in a logical and easy to understand format. Thanks so much for the work you put into making this video, and great job!

[@prem-qual]

Great video thanks

[@roccygab7055]

how to decide to use general inspection or special inspection

[@asiaqualityfocus8206]

Special inspection levels are normally reserved for certain types on on-site testing or checks that are only necessary on a relatively small number of units in the lot because results are not likely to differ significantly between units tested (often fewer than 10 units for inspection of most consumer goods). For example, material composition testing for fabric is usually only necessary to perform on 2-3 units of fabric because the results are not likely to vary across different samples for the same SKU. So you'd likely want to use a special inspection level here, rather than general.
General inspection levels are the larger and most common inspection levels used. These cover all of the regular checks and tests that can be conducted relatively quickly with results that can vary across all units sampled. In the fabric example above, looking for defects like pulled yarn, stains and dirt would be part of visual inspection, which is typically part of general inspection, not special inspection.