A New Procedure for Bulk Material Quality Control

Most companies with incoming raw materials in bulk form receive test results from the vendor. The receiving department either does not test the material for acceptance at all, or duplicates the testing done by the vendor. A joint quality programme is presented between the vendor and the buyer that will reduce inspection costs and improve the quality and consistency. The vendor in this plan will practise process control and forward the results to the receiving department of the buyer. The buyer will exercise a multi‐level skip‐lot sampling plan to accept or reject incoming lots, based on the comparison of the vendor′s test data with its own test results. Detailed information for full implementation of this plan is provided.