Borosilicate glass, known under trade names such as Pyrex® and Duran®, is widely used in chemical and engineering applications.

This glass is chemically resistant, has a low thermal expansion coefficient and can be used at relatively high temperatures.

Our high quality borosilicate glass substrates are optically polished on both surfaces. The excellent flatness, a low warp of our borosilicate wafers and the thermal coefficient of expansion close to the one of Silicon, facilitate sophisticated applications in the semiconductor industry such as anodic bonding to Silicon and various micro optical applications. On request, our Borosilicate glass wafers can be made with a ground SEMI standard flat or a notch.