This System 96® glass is a White Opalescent glass that contains copper. When fired with a tin bearing glass, the two glasses react to produce a deep burgandy red color. Uroboros Glass Red Reactive Opal and Transparent and Reactive OpalArt contain tin and produce reactions with this glass.
With System 96 products, glass artists may combine blowing, casting, torch work, and of course fusing. Produced cooperatively by Uroboros Glass and Spectrum Glass, these products are tested to be compatible, and are very smooth and easy to cut. Devitrification, commonly referred to as "devit," is rarely a problem. Most glass blowing studios use glass with a COE of 95 or 96, making System 96 glass products very versatile.