esz AG receives accreditation for climate chambers

esz AG calibration & metrology is now accredited for the calibration of climate chambers for the measurands temperature and humidity. The official notification includes calibration in the esz laboratories and on-site.

In March 2020, the DAkkS (German Accreditation Service GmbH) had completed and certified the accreditation process for esz AG to convert to the new laboratory standard DIN EN ISO / IEC 17025: 2018. The accreditation also included changes in the high-end area, for the use of the Josephson quantum calibrator, as well as for direct and alternating current strength and resistance. In addition, numerous changes and contradictions resulting from the 2017 re-accreditation process were resolved and corrected. Now esz AG calibration & metrology is accredited for the calibration of climate chambers.

It took three years for esz AG to receive the DAkkS notification. Before that, numerous negotiations, mediations, comparative measurements and bureaucratic obstacles had to be taken. "We are delighted that Mr. Rosner and his thermometry team have consistently hung in there and convinced with competence and expertise," said esz board member Philip M. Fleischmann.

The new DAkkS certificate and annex (list of services) can be found on the esz website at


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