Quality Control

Posted in Operations and Supply Chain Terms, Total Reads: 871

Definition: Quality Control

Quality Control (QC) is a procedure or set of procedures intended to ensure that a manufactured product or performed service adheres to a defined set of quality criteria or meets the requirements of the client or customer. It is used to maintain standards in products and services. It is a process through which a business seeks to ensure that the product or service quality is maintained or improved and manufacturing errors are reduced or eliminated.

The most important aspect of quality control is the establishment of specific controls as these controls help to standardize production. Quality control requires the business to create an environment in which both management and employees strive for perfection. This is done by training personnel, creating benchmarks for product and service quality, and testing products or services for statistically significant variations.


Quality control involves:-

  • Establishment of specific set of controls to which product and service quality are to conform.
  • Checking product or service quality.
  • Analyzing variances between set controls and actual quality.
  • Checking as to whether the variances are within statistical limits.
  • Taking corrective action for unacceptable variances.
  • Establishing procedures so that the variances do not arise again.

Quality control attaches immense importance to statistical procedures as it these procedures that lend quantitative authenticity to statistical controls.



Toyota has adopted a system of Total Quality Management wherein it embraces statistical methods of Quality control and Quality management to ensure its products conform to all specified controls and procedures and are of utmost good quality.


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