Metrology & Calibration

The field of Metrology and Calibration accreditation covers all types of calibration, including electrical, dimensional, pressure, temperature, mass, humidity, light and time and frequency measurement. With accreditation, metrology and calibration laboratories receive formal recognition of their technical competence after assessment of their processes, facilities, staff and other key factors which relate to, and impact on the quality of the calibration service provided. There are 60 calibration laboratories accredited in New Zealand.

Accreditation Criteria


  • NZS ISO/IEC 17025: General Requirements for the Competence of Testing and Calibration Laboratories.



Class of test

Classes of Metrology and Calibration for IANZ Accreditation include the general measurement areas of:

  • Engineering metrology
  • Electrical
  • Temperature and humidity
  • Optics and radiometry
  • Mass, volume and density
  • Pressure and flow
  • Time and frequency
  • Reference material and artefact calibration


Consideration is given to:

  • Laboratory accommodation and safety
  • Traceability of measurement
  • Laboratory equipment management and calibration
  • Computer-controlled calibration equipment
  • Laboratory staff
  • Laboratory test and calibration methods
  • Uncertainty of measurement
  • Certificates of calibration
  • Measurement audits
  • Management system maintenance and implementation