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Vodní Sklo, a.s. is one of the leading manufactures of silicates and calcium chloride in Europe.


Our production portfolio mainly consists of sodium, potassium and lithium silicates, foundry binders, flow agents, calcium chloride and precipitated calcium carbonate. One of our company´s goals is using of the latest research findings and new technologies with a focus on the foundry, paper, construction and chemical industry.

Vodní Sklo, a.s. is a part of TONASO Holding, a.s. and has two production units in the Czech republic (Ústí nad Labem and Brno).

We have a reliable, experienced, proficient, trained and qualified working team which is ready to meet all our customers´ requirements.

History of the company dates back to the 19th century when the company started to produce, inter alia, silicates in Brno (Hochstetter and Schickardt) and Tonaso company was founded in 1905 in Ústí nad Labem like belgium Solvay plant.

Company Vodní Sklo, a.s. attended an international food fair Salima on 17th - 19th February 2016 in Brno.
Our company has received Responsible Care certification of results achieved in fulfilling voluntary aims and goals in this program. This program aims to improve environmental protection and health and safety of all activities of the company. Responsible Care certificate is possible to download at:
Our company has received the European CE certification for the product range LITOSIL that is manufactured and supplied as a system to protect the concrete surface protection against strong chemical attack petrol, diesel and electrical insulating oil according to the European harmonized standards. CE certificate in Czech language is possible to download at:

The plant in Ústí nad Labem

The plant in Brno

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