QUALITY CONTROL OF LIQIUD DISHWASHING AGENTS
Liquid detergents are widely used in household and, since people contact this type of products directly, strict requirements are set for their quality. For this reason, detergents must be carefully controlled and tested before they get to consumers. This paper considers the matter of quality assurance of a liquid dishwashing agent at various stages of its manufacturing. The flow diagram is presented for manufacturing a liquid detergent, in accordance to which the sequence has been presented and justified for introducing raw material components into the reactor. We have shown the input control of raw materials, which is the most important and determining for all the other quality assurance stages. We have also considered the operational control methods for intermediate products directly in the dishwashing agent manufacturing. Control and testing types and methods are presented for end products. We have also determined the measuring tools to be used in processing and in quality assurance, as well as the metrological characteristics of such measuring tools. Using Shewhart’s control charts, we have investigated the quality indicators of a liquid dishwashing agent at the acceptance testing stage.