Sampling and online analysis tools:Quality control and quality assurance are important systems in delivering the desired product to the customer

摘要

Quality control and quality assurance are two important yet distinctly different objectives. As defined by Dictionary, com, quality control is a system for verifying and maintaining a desired level of quality in an existing product or service by careful planning, use of proper equipment, continued inspection and corrective action as required. The definition for quality assurance is a system for ensuring a desired level of quality in the development, production or delivery of products. The former involves verifying the quality of the products produced while the latter is ensuring the process to deliver a quality product.The difference is reactively testing the product versus pro-actively managing quality production. Both quality control and quality assurance are important systems in delivering the desired product to the customer. However, that is not the purpose of this article. A common denominator in either system is product sampling.