#asqc

[waybackwanderer]

Quality InfoSearch Aug 1998 Archived Web Page

[thelivingprocess-change-blog]

A need for an objective Measurement of Quality

How to set a clear cut of acceptability and rejection in an agreeable way and quantitatively measured? This is what the AQL comes into play.

ANSI/ASQC  Z1.4-1981  defines  AQL  as  “the  maximum  percent nonconforming (or the maximum number of non-conformities per hundred  units)  that,  for  purposes  of  sampling  inspection,  can  be considered satisfactory as a process average.”

To put it simple, The Acceptable Quality Limit (AQL) is the poorest tolerable process average (mean) in percentage or ratio that is still considered acceptable statically. 

The AQL of a product can vary from industry to industry, depending on the criticality of the defect or risks.