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With the development of the patented and notified THONHAUSER-PERSULPHATE-TECH_big.jpg , Thonhauser has set new standards in the field of hygiene control

THONHAUSER is known as THE VERIFICATION COMPANY today. We developed a chemical principle where an indicator solution changes colour when in contact with organic material. That happens in parallel action with an oxidation process and mineralization of any organic residues. In addition to the chemical process, THONHAUSER developed measurement tools for quantitative measurement of the indicator colour.

Fields of application

In beverage dispensing systems and in production and filling lines in the form of fully automated VERIFICATION IN PLACE® or CONSULTING SERVICE for the VERIFICATION of CIP- and other cleaning processes.


Value add for the user

The status of clean of (inner) surfaces can be observed in real time, without additional costly lab tests. This new level of quality can be used to archive different levels of competitive advantages, such as optimization of the CIP program or choice of the proper sanitation interval for dispensing installations. 

For more than 40 years we have been striving for best hygiene in the food-industry and have been developing high-performance cleaning detergents and tailored packages for the entire processing hygiene.

This is only possible with a strong, experienced team, where each one will attend to your specific hygiene needs with personal and competent consultation. Our sales team is here to assist you any time.


Michael Liebl

West-Österreich, Bayern, Norditalien, Schweiz

DI Tino Reikerstorfer

Austria, Worldwide