Precise Flow · Calibration · Test Equipment

Quality management in accordance with standards ISO 9001 and 17025

The quality management system of our company has been certified since 5.5.2004 in accordance with standard DIN EN ISO 9001 by TÜV Rheinland. But our calibration laboratory is since 31.3.1999 in accordance with DIN EN ISO / IEC 17025 accredited initially by the German Calibration Service (DKD) and now by the German Accreditation Office (DAkkS).

In the beginning there were only the measuring quantities mass and volume flow of air and gases as well as volume and mass of flowing gases. But since 16th of June 2017 we have extended our calibration service to the measurement quantities pressure, temperature, relative humidity, and electrical direct voltage, direct current and DC resistance.


In addition to the external system audits, the highly experienced quality management consultants Managementsysteme Seiler once a year carries out our internal audits.

Quality-oriented thinking and action

... is an essential part of our quality management. Striving to constantly improve the quality of our products and services and our quality management system is an important goal for all of our colleagues at TetraTec Instruments.


That’s why our products and services are being constantly tested and individual processes and techniques regularly reviewed and evaluated. Whilst maintaining the quality standards we have accomplished, our aim is to constantly improve upon them in our desire ultimately to achieve the greatest possible customer satisfaction.

Our motto: The best proof of good quality is customer satisfaction!

9001 und 17025

Double the Quality!

We are a member of the German Calibration Service
DKD Deutscher Kalibrierdienst