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 ?
Prime Minister of Pakistan Nawaz Sharif in his message on occasion, term Quality Standard Award creating healthy competitive environment among the leading national and multinational Products and services in Pakistan.
Jabbar, renowned industrialist and Honorary Consul of Ukraine, in his speech appreciated the organisers and winners of the Quality Standard Award.
The NICE quality standard on atopic eczema in children (see Table 1) is based on the NICE clinical guideline on the management of atopic eczema in children from birth up to the age of 12 years (NICE Clinical Guideline57).
Pir Buksh Jamali for his presence and active participation to make this 3rd Quality Standard Award, Award distribution ceremony a successful event.
NICE has been commissioned by the Department of Health to produce quality standards to clarify what high quality care looks like across specific diseases and conditions.
In addition, we will be working with retailers to persuade them to go that extra mile in sourcing Quality Standard Mark product over the next few months and also with the supply chain to help maintain a balance between supply and demand.
Independent research has shown 53% of England's shoppers are willing to pay a premium for Quality Standard beef and the majority of those would pay up to 10% more.
Data Gathering Methodologies--these are the intended methods for gathering data and information to know whether your quality standard is being met.
Jabbar, Renowned industrialist and Honorary Consul of Ukraine, Former Vice President FPCCI/ former Chairman SITE Association of Industry and BODs Member of PSQCA, in his Speech appreciated organizers of Quality Standard Award and assured his full cooperation for consumer empowerment.
Under the new requirement, which has been agreed by Defra, the Bos indicus genetics must not appear in any beef or beef products that carry the Quality Standard Mark.
The injection machine quality standard proposed by Hunkar is a nine-level scale, each level defining an acceptable tolerance band for 19 process parameters.
A new quality standard mark for beef and lamb was launched regionally by Hexham parliamentary candidate Peter Atkinson at Corbridge on Friday.

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