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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.

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.
After months of preparation certification audit ISO 14001 relating to environmental protection will take place in Vodní sklo, a.s. in the first quarter of 2015.
The company Vodní sklo, a.s. takes as business as production of company KOMA, s.r.o. from 1st of October 2014

The plant in Ústí nad Labem

The plant in Brno

2015 © Vodní sklo, a.s. | A member of holding Tonaso
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