Telephone: +420 475 245 210      E-mail:      A member of holding:
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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.

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:
Dear customers, Due to a scheduled maintenance of transport and energy routes in week 26 (22 - 26 June 2015) our production at manufacturing plant in Ústí nad Labem will be shut down. The expedition of finished goods will be possible. Deadline for receipt of orders with scheduled delivery in week 26 is Wednesday, June 17, 2015. Thank you for your understanding.
On February 20, 2015 our company received a certificate Halal valid for product calcium chloride (CaCl2). Certificates in English can be found in the download section / Certificates.

The plant in Ústí nad Labem

The plant in Brno

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