Companies need to ensure that the results they obtain from their measuring equipment are correct when used in key activities such as controlling process variables, assuring the quality or safety of their products, processes or services, or obtaining data required for analysis and important decisions.

Component ageing, temperature changes, the mechanical stress supported by the equipment, etc. leads to the gradual impairment of its functions. When this happens, measurements become less accurate, which affects both the design and quality of the product.

It is therefore essential to have technically competent calibration services to meet the metrological needs of companies, which are increasingly more diverse and technologically complex. Accredited laboratories are the only ones that guarantee the traceability and reliability of calibration results.

Accredited laboratories cover all areas of calibration (electricity, mechanics, temperature, optical, dimensional, etc.) for a wide variety of variables and equipment, from more "traditional" or "common" – -weighing instruments, presses, electrical gauges, etc.– to more specific or innovative – video signals, thermometric cameras, exhaust emission analysers and fibre optics – to provide services to all types of industry.

All ENAC documentation relative to accreditation criteria and procedures for calibration laboratories is available in the DOCUMENTS section.

Technical competence, more than just quality management

Unlike ISO 9001 certification, which is the confirmation that a company has set up a quality management system in accordance with certain requirements, accreditation under the ISO/IEC 17025 standard confirms the technical competence of the laboratory and guarantees the reliability of test and calibration results.

Only accreditation can generate confidence both in the laboratory's competence for issuing reliable results, with the necessary human and material resources and experience, and its ability to provide a service adapted to the needs of its clients, since the ISO/IEC 17025 standard requires the laboratory to have a quality management system defined by the standard itself, in addition to technical competence requirements. See the joint IAF-ILAC-ISO communiqué on the ISO/IEC 17025 standard here.

Further information:

Examples of accredited calibration services

  • Balances
  • Presses
  • Thermometers
  • Sound level meters
  • Exhaust emission analysers
  • Fibre Optics
  • Fibra óptica
  • Reflectance spectrophotometers
  • Ionisation chambers
  • Viscometers
  • Laser meters
  • Dosimeters