Services Services

Calibration, testing and irradiation services

Calibration, testing and irradiation services

The Radiation and Nuclear Safety Authority performs calibration, performance tests and irradiations of radiation meters.

Irradiations are also performed on passive targets such as biological samples or electronic components. Upon agreement, calibration and measurements can also be performed at the location where radiation is used. Furthermore, STUK provides calibration and measurement services related to the measurement of non-ionizing radiation and meters or research as well as safety assessments related to the use of radiation.

Ionizing radiation

STUK functions as the national standard laboratory for radiation quantities  and  maintains the metrological standards of radiation dose parameters.

Quality system

STUK participates in the international Mutual Recognition Arrangement CIPM MRA (Comité Internationale des Poids et Mesures). The national metrology institutes and national standard laboratories participating in the arrangement acknowledge the equivalence of their measurement standards and the calibration and measurement certificates they issue. The objective of the MRA is “once measured, accepted everywhere”.

The quality systems of the laboratories taking part in the CIPM MRA arrangement meet the requirements of the ISO 17025 standard. The approval decision of STUK’s quality system is based on self-declaration. An approval decision based on self-declaration necessitates annual reporting to the EURAMET association and regular external audits.  

Additional information about the measurement standards system of Finland is available on the website of the Centre for Metrology and Accreditation (MIKES). The CIPM MRA Calibration and Measurement Capabilities (CMCs) of the dosimetry laboratory have been published in the database of the International Bureau of Weights and Measures (BIPM, Bureau International des Poids et Mesures).

Ordering and delivery of services

A list below presents contact persons for further information on services and inquiries of quotation.

E-mail: calibrations (at)

Contact persons
Reetta Nylund, radiotherapy meters
Panu Pousi, radiation protection meters
Carita Lindholm, X-ray diagnostics meters

Postal address
STUK – Radiation and Nuclear Safety Authority
Radiation metrology laboratory
Jokiniemenkuja 1
01370 Vantaa, Finland

Calibration of radon measuring instruments

  • Calibration of instruments measuring the activity concentration of Radon-222  (e.g. solid-state detectors, ionization chambers and Lucas cells)
  • Radon-222 exposure of measuring instruments based on alpha track film
Contact persons
Tuukka Turtiainen, tel. +358 9 759 88 473
Päivi Kurttio, tel. +358 9 759 88 554

Non-ionizing radiation

Ultraviolet radiation

  • Testing and calibration of UV meters
  • Radiation measurement of UV devices
  • UV radiation measurement and safety assessments at workplaces 
Contact person
Lasse Ylianttila, tel. +358 9 759 88 455

Electric and magnetic fields, RF radiation 

Calibration of RF meters: Measurement of electromagnetic fields and safety assessments, for example

  • base stations
  • radio heaters
  • property distribution substations
  • radar equipment
Contact persons
Lauri Puranen, tel. +358 9 759 88 457