quality control

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Quality Control

The processes a company or organization uses to test products to ensure that they are not defective. Quality control operatives may investigate the procedures used to make a product, the knowledge of employees or even intangibles like company morale. Quality control is distinguished from quality assurance in that quality control tests for errors while quality assurance seeks to put in place systems to ensure that the errors do not happen in the first place. See also: Quality.

quality control

the task of ensuring that the QUALITY of a product or service meets specified performance criteria. Quality control involves a number of activities, in particular:
  1. interpretation of PRODUCT SPECIFICATIONS;
  2. INSPECTION of products at each stage of production, including SAMPLING procedures to select items for testing and the use of testing equipment to check the performance of components or products and detect those that are defective. The results of such tests enable production operations to be modified quickly, for example by changing machine settings, to prevent further defectives being made and thereby saving on rectification costs or the later processing costs of items which would eventually have to be scrapped;
  3. cooperation with design, marketing, production and research and development over improvements in product quality;
  4. undertaking periodic quality audits to review the effectiveness of quality control procedures. See TOTAL QUALITY MANAGEMENT, PRODUCTION CONTROL, QUALITY ASSURANCE, FISHBONE CHART, QUALITY CIRCLE, SCRAP, CONTROL CHART, FAILURE COSTS, NORMAL CURVE, SAMPLING, ACCEPTANCE SAMPLING, CONTROL COSTS, LOT TOLERANCE PERCENTAGE DEFECTIVE, QUALITY FUNCTION DEPLOYMENT, QUALITY LOSS FUNCTION.

quality control

a discipline concerned with improving the QUALITY of goods and services produced. The object of quality control is to prevent faulty components or finished goods from being produced, and it uses a variety of devices to help achieve this aim. Techniques of statistical sampling and testing can be used to identify faulty materials and products. Statistical variability limits can be used to ensure, for example, that machines are continuing to hold their tolerances in producing goods. QUALITY CIRCLES can be employed to involve work-groups in the task of quality assurance by generating discussion about the cause of quality problems and how workers themselves can deal with such problems. See also PRODUCTIVITY, PRODUCT PERFORMANCE, PRODUCT DIFFERENTIATION.
References in periodicals archive ?
During a Seminar on Importance of Standards on occasion of distribution ceremony of Quality Standard Award 2015, he said that we have to work hard to concentrate on quality control which is more important, the manufacturers need recognition for their Products and Services in order to maintain quality standard which will help them standout and compete not only in Pakistan but in the international market as well.
Quality standard award is a tribute to honour businessmen and industries of our country, Award is strengthening relationship of trust among consumer products and service providers.
For us, the awards clearly reflect a vote of confidence from global travelers, who acknowledge and appreciate our continuous drive to deliver high- quality standard service.
International Standards Ensure Positive Change" was jointly organised by The Consumers Eye Pakistan (TCEP) and the Pakistan Standards and Quality Control Authority (PSQCA) on the occasion of the distribution ceremony of the Quality Standard Award.
Patients, service users, carers and the public can use the quality standards as an important reference to find information about the quality of services and care they should expect from their health or social care provider
Dr Cindy Tromans (pictured), president of the College of Optometrists, said: "A key outcome of the summit will be a unified position across the eye care sector on the contents of a quality standard for glaucoma.
However, MEPs are urging the Commission to review another 31 substances (eg dioxins and polychlorinated biphenyls or PCBs) and to add them either to the proposed list of pollutants that have to meet quality standards by 2015 or to the list of those to be phased out by 2025.
ISO 9001 is rapidly becoming the most popular quality standard in the world, with thousands of companies adopting these customized standards as the ultimate mark of quality.
Competition for quality standards arises when there are two or more decentralized governments in a common market and when all governments have to obey the principle of mutual recognition.
Revising the air quality standards: a briefing paper on the proposed National Ambient Air Quality Standards for particulate matter and ozone.
Helping teams to create a strategic performance framework will be most important, a framework in which team members gather data from customers, create quality standards, plan individual and team projects to meet these standards, and take ownership for measuring the results and for continuously improving.
Information was compiled from a periodic NIST survey focusing on so-called "9000 series" quality standards and on "ISO 14000," the family of Environmental Management System standards issued by the International Organization for Standardization (known as ISO).

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