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You are here: Home / Quality Control Tips / QC Inspections: How to Read the AQL Tables

QC Inspections: How to Read the AQL Tables

September 23, 2013

QC Inspections: How to Read the AQL TablesI have prepared a few videos that explain how to use the ANSI tables (also known as “AQL tables”).

Here is the first one. In less than 7 min, it will show you:

  • How to find the number of samples to check;
  • What the AQL limits are for each category of defects;
  • What the arrows mean;
  • How to also read the tables for double sampling plans.

Can’t see the video? Click here. 

You want to download the slides? Click here.

Let me know if something is unclear! Thanks.

In future videos, we’ll go more in-depth. We’ll study when using these tables is applicable, and why they are clearly in favor of the supplier.

Filed Under: Quality Control Tips

Comments

  1. Peter says

    May 13, 2014 at 11:55 AM

    Mr Anjoran.
    This is a fantastic website and resource – thank you.
    I was curious about this tutorial about AQL. If the acceptance level of critical defects is 0, then how can this be confirmed without 100% inspection? The table goes down to 0.01% defect rate, which requires a minimum sample size of 1250 in order to detect a defect at that rate. If a 0% critical defect rate is acceptable, I can’t see how this can be achieved without 100% inspection (ie. your sample size = batch size in order to reject shipment for that single defect found).

    • Renaud Anjoran says

      May 14, 2014 at 11:00 AM

      “Acceptance zero” means “Acceptance zero within a certain sample”, not among the whole population.
      And an “acceptance zero” plan does not use the ISO 2959-1 standard. The tables would be different.

      • Peter says

        May 14, 2014 at 4:42 PM

        I understand – that makes sense.

        Thanks again.


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