quartz tube or fused silica tube  is glass tube consisting of silica in amorphous (non-crystalline) form. It differs from traditional glasse tube in containing no other ingredients, which are typically added to glass to lower the melt temperature. Quartz tube, therefore, has high working and melting temperatures. The optical and thermal properties of quartz tube  are superior to those of other types of glass tube due to its purity. For these reasons, it finds use in situations such as semiconductor fabrication and laboratory equipment. It has betterultraviolet transmission than most other glasses.

quartz tube or fused silica tube  is glass tube consisting of silica in amorphous (non-crystalline) form. It differs from traditional glasse tube in containing no other ingredients, which are typically added to glass to lower the melt temperature. Quartz tube, therefore, has high working and melting temperatures. The optical and thermal properties of quartz tube  are superior to those of other types of glass tube due to its purity. For these reasons, it finds use in situations such as semiconductor fabrication and laboratory equipment. It has betterultraviolet transmission than most other glasses.