Jena glass (German: Jenaer Glas) is a shock- and heat-resistant glass used in scientific and technological applications, especially in chemistry.
The glass was invented by Otto Schott ...
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in 1884 in Jena, Germany, where he had established Schott AG with Ernst Abbe and Carl Zeiss. Jena glass is a borosilicate which, in early manufacture, contained added aluminum, magnesium, sodium, and zinc. It was a predecessor to other borosilicate glasses which came into wide use in the twentieth century, such as Pyrex.