Quality Control Jan11

Quality Control

Quality Control There are two terms which are frequently used for ensuring the quality of a product or service. These terms are ‘quality control’ and ‘quality assurance’. These two terms are often used interchangeably. However these two terms differ in meaning. Quality control is an evaluation to determine needed corrective action. It is an act of guiding a process where variables are kept under constant observation and control within a range of limits. It is based on measurement and control of the parameters which can affect the quality of product or services. On the other hand quality assurance is an activity which gives confidence and make doubly sure that the things will not go wrong. Quality assurance takes place through a planned and systematic activity normally through procedures designed for meeting the quality requirements for a product or service. The ISO definition states that quality control is the operational techniques and activities that are used to fulfill requirements for quality. This definition could imply that any activity whether serving the improvement, control, management or assurance of quality could be a quality control activity. Quality control is a process for maintaining standards. Standards are maintained through a process of selection, measurement and correction of work, so that only those products or services emerge from the process which meets the standards. In simple terms, quality control prevents undesirable changes being present in the quality of the product or service being supplied. Quality control can be applied to particular products, to processes which produce the products, or to the output of the whole organization by measuring the overall quality performance of the organization. Quality control is often considered to be an activity which takes place after the event is over. This means that the quality is determined after...