Tradition and future by your side Gebrüder Heyl Analysentechnik GmbH & Co. KG was founded in 1958 in Hildesheim as a family business for chemical-pharmaceutical products. In the early days, we only produced pharmaceuticals. In the next few years, the nature of products changed. A new chemical product to determine the water hardness called Durognost®, was developed and manufactured by Gebrüder Heyl Analysentechnik. In cooperation with another local company Gebrüder Heyl Analysentechnik designed the Testomat® devices, which continuously control the hardness of water e. g. in industrial plants or hospitals. During the next few decades, the chemical indicators and the control devices were improved and specified for other tasks related to water. Till today the Testomat® devices are the core products of Gebrüder Heyl Analysentechnik. They are produced in Hildesheim, in the company´s Headquarters. Gebrüder Heyl Analysentechnik works together with many distributors all over the world. Sales companies exists in France, the USA, the Netherlands, Switzerland and Germany. Together with these partners Gebrüder Heyl Analysentechnik guarantees a perfectly matching water quality. For more information about corporate culture, jobs and more visit our website.