A reader asked me how he should do an inspection of a lot produced in isolation. In theory, he should work with the Limiting Quality Level (LQ), not the AQL, which is designed for inspections of a continuous stream of production. I shot a video to contrast the 2 approaches, explain when each makes sense, and show how each works. … [Read more...]
100% Inspection in a Third Party Facility in China: The How-To
I am guessing that about 96% of quality inspections done in China, on behalf of overseas buyers, are conducted in the supplier's facility on a set of randomly-picked samples. About 3% are done at the supplier's facility, on 100% of the pieces (typically, high-value items). And maybe 1% is done in a facility controlled by the buyer or a service provider engaged by the buyer. And it makes sense. In most cases, a random inspection (or a series of such inspections along the manufacturing cycle) … [Read more...]
How does a random quality inspection work? [infographic]
![How does a random quality inspection work? [infographic]](https://qualityinspection.org/wp-content/uploads/2010/10/shutterstock71358019-1140x445.jpg)
On the last trade show I attended, I noticed that I explained over and over again how we perform random quality inspections. There must be a better way to pass this message. A graphic designer helped me render it visually, and here is the result: To go further: lots of great information about inspections on this page about QC basics. Understanding what “AQL” (Acceptance Quality Limit) means in simple terms here. -------- TRANSCRIPT: FINAL RANDOM INSPECTIONS - How … [Read more...]