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Gotenstr. 9, 10829 Berlin
+49 030 6040 4774
info@berlinbeads.de
Walk-In Customer Opening Hours
Thurs. and Fri.: 11am-6pm
Sat.: 11am-3pm

Glass Rods COE 33 (Boro)

Borosilicate glass is not compatible with so-called "Soft Glass" or "Moretti Glass". Boro glass has a COE (Coefficient Of Expansion) of 33 x 10-7. "Soft" or "Moretti" glass has a COE of 104 x 10-7. Because of the large difference between COE 33 and COE 104, these two types of glass are definately not compatible with each other. None the less, we love them both!

Except for the glass products from Origin Glass, we sell the borosilicate glass rods and tubes in 25cm lengths. If you want to receive your boro rods or tubes in 50cm lengths, please read here to find how to do this.


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