Quartz discs, or wafers, are made from high quality fused quartz, ground and polished to optical grade on both sides. The discs are ideal for use as substrates for thin film research and are also suitable for many optical applications. Quartz wafers have excellent chemical resistance against a wide variety of solvents, as well as exceptional heat resistance, with high dimensional stability over a wide temperature range. They are available in sizes from 1" (25.4mm) to 4" (102mm) with thickness of 1/16" (1.59mm) and 1/8" (3.18mm).