For calibrating purposes in physical and chemical investigations of glasses, the DGG offers the following standard glasses.

Standard Glass I is a soda lime silica glass (flat glass) with precise chemical analysis. The Physikalisch-Technische Bundesanstalt of Braunschweig carried out the viscosity measurements in the temperature range of 520 to 1420 °C. In round robin tests, transformation temperature and thermal coefficient of expansion were determined.

Standard Glass I is available as sheets (80 mm x 50 mm x 10 mm) of 100 g each. Tables stating data of viscosity and chemical composition are attached. Price: EUR 200.- per 100 g of standard glass plus dispatch charges.

To order Standard Glass I, please click:
»Kontakt«

The composition of Standard Glass II corresponds to that of a float glass. The chemical analysis of this glass as determined by a round robin test is available upon request. Delivery is a set of two sheets (80 mm x 50 mm x 5 mm) of 50 g each. Price: EUR 100.- per 100 g of standard glass plus dispatch charges.

To order Standard glass II, please click
»Kontakt«.

Standard Glass III is a borosilicate glass (type Duran). The chemical analysis of this glass as determined by a round robin test is available upon request. This standard glass is offered in the form of a powder (sieve analysis also available). Price: EUR 100.- per 100 g of standard glass plus dispatch charges.

To order Standard Glass III, please contact:

Zentrum für Glas- und Umweltanalytik
Hohe Straße 45
98693 Ilmenau-Unterpörlitz
Tel.: +49(0)3677 8 45 20
Fax: +49(0)3677 84 52 28
Web www.zgu.de
E-Mail: lab(at)zgu.de