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Calibration Laboratories

Click for application information, fees, rules, and other important documents.
Click for a complete list of Accredited Calibration Laboratories.

Measurement is a basic part of life. The measurement may involve something as simple as determining the correct volume and weight of a substance, or as complex as determining the trajectory of a trip to Mars. Calibration is the basis for ensuring accurate and consistent measurements. Calibration relies on people, who must be qualified to perform the calibration. IAS accreditation provides an independent verification of the technical competence of the people and the effectiveness of the quality management system, of the calibration provider. IAS accredits calibration providers to the international standard ANS/ISO/IEC Standard 17025:2005, General Requirements for the Competence of Testing and Calibration Laboratories, through a rigorous process that includes direct observation by qualified assessors of technical expertise. IAS is a signatory to the ILAC Mutual Recognition Arrangement for Calibration.

Proficiency Testing and Interlaboratory Comparisons

Proficiency testing and interlaboratory comparisons (PT/ILC) are two closely related methods that a laboratory may use to demonstrate technical competence. PT/ILC provides independent feedback concerning a laboratory's actual performance, and can be used as a tool to monitor improvement efforts.

IAS supports the use of PT/ILC as an improvement tool. PT/ILC is required for IAS laboratory accreditation, and IAS is working with its national and international partners to ensure that necessary and appropriate PT/ILC is available for laboratories in all fields.


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