Borosilicate

The borosilicate glass we sell is produced by Simax, in the Czech Republic. We only sell transparent clear glass (rods and tubes, with or without profiles) for now, no colours. Borosilicate is not compatible with "soft" glass (like Effetre, Vetrofond, Lauscha, CiM, etc.) - it takes a lot more heat to melt borosilicate glass.