Borosilicon Glass

The Glass
DURAN® is a special borosilicate glass of the first hydrolytic class. Its invention was one of Otto Schott's great achievements. Laboratory and chemical plant technology would be unthinkable without DURAN® tubing, capillary and rod, which provide the basis for custom-made solutions to specific problems.
 
The Advantages
Products made from DURAN® are well- known for their stability, good workability and high thermal shock resistance. DURAN® has a very low rate of thermal expansion which makes it an excellent material for laboratory glassware and for use in large- scale technological plants in the chemical apparatus industry. Products made from DURAN® are resistant to corrosion and remain absolutely neutral, even to aggres- sive chemicals, in nearly all fields of chemistry. This gives them a great advan- tage over other materials. Borosilicate glass is extremely resistant to water, acids, salt solutions, organic substances and halogen. Tubing, capillary and rod of DURAN® also have a high alkali resistance. For physical and chemical properties, please see tech- nical data on the following pages.
 
The large range of tubing, capillary and rod provides a very high level of precision in all dimensions. These products are also available in the form of thermally prestres- sed components for use in demanding conditions.

The Quality
As with every SCHOTT-Rohrglas product, DURAN® tubing, capillary and rod are manufactured using the latest technology. Products made from DURAN® Boro- silicate Glass 3.3 by SCHOTT correspond to the main international standards (for example, ISO 3585 and ASTM E438 Type I, Class A). The entire production process is electronically controlled and comprehensively monitored by a Quality Assurance System. SCHOTT-Rohrglas is certified according to DIN EN ISO 9001 by TÜV CERT.
The corresponding quality criteria are described in the Technical Terms of Supply.
 
Further Processing
There are widespread fields of application for DURAN® tubing, capillary and rod. The main area of use is in the laboratory and chemical industries, ranging from simple test tubes to filter apparatus and diverse types of cooling and distilling plants.
Tubing, capillary and rod of DURAN® Borosilicate Glass 3.3 are also to be found in large-scale chemical and sewage plants, in pipeline construction, in measuring and controlling techniques, and increasingly in environmental technology, for example in solar collectors and waste gas desulphurization plants. Other technical fields of application are, for example, heat exchangers, flameproof tubes and flowmeters.
In the craft sector this glass is used to produce unique works of art, from a simple candlestick to filigree wine and champagne glasses.
 
The Manufacturer
SCHOTT-Rohrglas manufactures special glass tubing, capillary and rod in a wide range of glass types and dimensions for a multitude of applications. With an annual production of approx. 65,000 tons, SCHOTT-Rohrglas is one of the leading manufacturers of special glass tubing worldwide. Glass processors in more than 70 countries all over the world appreciate their long-standing experience, know- how and quality. Alongside the most modern melting and production methods for special glass, SCHOTT-Rohrglas also offers the highest standards of precision in the processing sector: one of their particular talents lies in the field of highly- automatic finish grinding for tubing and rod in small diameters. In order to help you find the optimum solution, we would be pleased to work together with you and answer any questions you may have concerning further processing for glass tubing and rod.