6.5 Metrological traceability | ISO/IEC 17025:2017

Metrological traceability is a crucial concept in ISO/IEC 17025:2017. It refers to the property of a measurement result where the result can be related to a reference through a documented unbroken chain of calibrations, each contributing to the measurement uncertainty.
In simpler terms, it means that measurements made by a laboratory can be traced back to recognized standards, ensuring accuracy and reliability. This traceability is established by using calibrated equipment, standard reference materials, and documented procedures that link the measurement to national or international standards.
For a laboratory accredited under ISO/IEC 17025, ensuring metrological traceability is fundamental to demonstrating the reliability and accuracy of its test and calibration results. It provides confidence in the validity of measurements and ensures consistency and comparability of results obtained across different laboratories.