The red quartz glass tube is one of our characteristic products, which only can be made by our company in China

The surface of this kind quartz glass tube is clear or slight blue and its cut surface is light blue

With the use fusion technology and effective automatic controlled system, it has the typical Characteristic of high purity

the surface is yellow and cut surface deep yellow, can filter all the UV rays of invisible light

surface is colorless and cut surface is slight purple. This kind tube can stop the ultraviolet lights before 220nm in spectrum

This quartz glass tubes wall thickness is thicker than common ones