The world's leading solutions

Test it. Heat it. Cool it.

The weisstechnik brand is well-known worldwide for its innovative and proven standard solutions and its customised special systems in the fields of environmental simulation, heating technology, air-conditioning technology and clean air and containment. Its range of services covers the entire process, from initial planning through to installation and start-up and right through to qualified after-sales service.


The automated sheet metal processing centre at the Lindenstruth site is put into operation in order to further increase productivity.


Expansion of our expertise in the field of electric mobility by acquiring shares in the Centre of Excellence for Vehicle Electronics (KFE) in Lippstadt.


Presentation of the innovative ClimeEvent climate test cabinets with the new environmentally friendly refrigerant R449A.


Merger of BDK and GWE into Weiss Pharmatechnik with headquarters in Hude, now Oldenburg.


Merger of the automotive testing specialist Imtech and Weiss Umwelttechnik into Weiss Technik, situated in Hamburg.


Expansion and consolidation of the Lindenstruth site with the inauguration of the modern "Klimadrom" office building.


Acquisition of the long-term competitor Vötsch, which was founded in 1929 and invented environmental simulation technology.


The company is renamed to Weiss Technik GmbH.


Karl Weiss KG becomes a company of the internationally successful Schunk Group based in Heuchelheim.


The company moves to Reiskirchen-Lindenstruth and changes its name to Karl Weiss KG.


The company Karl Weiss is founded in Giessen with the aim of developing and manufacturing physical measuring devices.


Environmental simulation

You can use our weisstechnik and vötschtechnik testing systems for the time-lapse simulation of all environmental influences in temperature, climate, corrosion and combined stress tests.


Air-conditioning technology

We offer reliable solutions for applications requiring special climatic conditions: in hospitals, in production, in cleanrooms, in measuring rooms or in information technology.


Pharmaceutical technology

With our barrier systems, laminar flow systems, safety workbenches, isolators and airlock gate systems, we support the life science sectors and the industry in general.



Cleanroom solutions and safety workbenches and workspaces to protect patients and employees in the pharmaceutical industry.