ABSTRACT
Normally the design of test parameters, procedures, and specifications is done during product development. It is a good manufacturing practice to base such parameters on experience developed during processing of several pilot and production batches. Furthermore, the results of these studies should be subjected to statistical analysis in order to appraise correctly the precision and accuracy of each procedure for each characteristic. In the long run, with additional production experience, it is possible that specifications be modified for perfection and upgrading of product quality. The various disciplines of quality control testing can be clearly understood from the quality control attributes outlined in the quality measurements that follow.
