AQL - Acceptable Quality Level

The AQL-Standard provides a basis for the clients to decide on how they will proceed. Our inspectors work with the ISO 2859 tables 

and evaluate the AQL of the inspected product. The ISO 2859 refers to a U.S. standard with equivalents in national and international 

standard setting body (ANSI /ASQC Z 1.4, ISO 2859, NF06 -022, BS 6001, DIN 40080). We use the proven method of Acceptable 

Quality Level (AQL) to conduct product inspection ANSI/ASQ Z1.4-2008 and MIL STD 105E Standard for sampling.

The acceptance quality level (AQL) is internationally defined as the maximum defective percentage (or the maximum number of 

defects per hundred units) that, for purpose of sampling inspection, can be considered satisfactorily as a process average.

We will select a sampling size quantity (according to the AQL tables), and give you a recommendation according to the number of 

defects found (critical, major, minor defects). The result will show, if you should rather accept or reject the shipment.

Example :

For a lot of 5000 units, with a General Inspection Level II (this is the most commonly used Level ) you will find the sample size code 

letter "L" ? see Table I.

In Table 2 we find the sample size ("L") will be 200 units. We will now inspect 200 units of this production lot. When applying an 

AQL level of 2.5 (Table 2) you'll find that the corresponding acceptance number is 10. If we finds 11 defects the shipment should be 

rejected by the customer.