The National Reference Laboratory is accredited in accordance with the STN EN ISO/IEC 17043 standard for performing tests that enable the accreditation authorities to assess the quality control systems and the results of other testing laboratories in accordance with the STN EN ISO/IEC 17025 standard. The NRL is self-sufficient in organising proficiency testing programmes. Several decades of domestic experience and international cooperation, and a team of highly-qualified experts which use the latest analytical technologies guarantee that the NRL provides top-quality services in each of its areas of competence. Our services are available both nationally and internationally.

Certificate of Accreditation No T-500

Short Forms Programme of Proficiency Testing Scheme for 2024 is available here.

skusky sposobilosti

We organise proficiency testing programmes in the application of:

  • chemical and radiochemical methods;
  • biological methods;
  • sampling methods.

Proficiency tests are evaluated anonymously, and test results are statistically evaluated in accordance with ISO 13528. Results are announced in a Final International Comparative Test Report, which includes a Certificate of Correctness certifying that the test results are correct and an annex containing the results. Any objection to the organisation, administration or evaluation of an international comparative test should be lodged in writing to the test coordinator within 30 days of the date on which the objection was raised.

Interested? Please fill in the respective application form and send it to the NRL, or contact the PT coordinator directly.


Coordinator of PT:
Ing. Angelika Kassai, PhD.
tel.: 02/59343486

Currently available proficiency tests

Information on proficiency testing

Registration form for PT database

Archive of completed proficiency tests