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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.

Dear customers, between 8.6-12.6.2020 we will not be producing or expediting in our Ústí nad Labem production plant because of a planned shutdown of the power supply. Please order your goods the week before or after the planned shutdown. In extraordinary circumstances and after the consent of the business manager it will be possible to expedite goods at these times. Thank you
Litosil BET - it is new an ecological additive for the production ofconcrete, concrete construction components, concrete floors and other construction material.
Vodní Sklo a.s. is a traditional producer of solid calcium chloride (CaCl2). The present operating drying machine line is technically obsolete, and because of its high energy consumption it is also uneconomical, and therefore the use of this machine is less environmentally friendly. Because of this, the management of the company had decided to make a new , modern and energy saving drying line. The building will be completed in 2020.

The plant in Ústí nad Labem

The plant in Brno

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