Zero acceptance number quick switching system for compliance sampling

The zero acceptance number plan is invariably used for compliance sampling and safety inspection of products. The disadvantage of such a plan is that its discriminating power between good and bad lots is poor. This paper presents a quick switching system that has zero acceptance numbers, with a provision for the resubmission of lots not accepted during normal inspection. The proposed system is found to require a smaller average sample size, and possesses greater discriminating power.