Metrology, Calibration & Laboratories

Calibration, traceability, uncertainty, ISO/IEC 17025, proficiency testing and method control.

Why instruments are compared with references to establish trustworthy measurement relationships.

The unbroken chain of calibrations connecting a result to a specified reference.

Identify and combine significant uncertainty contributions at a conceptual level.

How laboratories use stable references to check instruments and methods.

A public overview of competence, impartiality and consistent laboratory operation.

Checks used to detect drift, contamination, bias and inconsistent test performance.

External comparison exercises used to evaluate laboratory performance.

Evidence that a method is suitable for its intended use.

Measurement-system variation from equipment and appraiser effects.

Temperature, humidity, vibration, cleanliness and power as measurement influences.

Preventive care, functional checks, faults and service history.

Communicate results, methods, units, uncertainty and traceability clearly.