There are 3 grades of quartz glass: JGS1 far ultraviolet optical quartz glass, application spectral band 185-2500nm JGS2 ultraviolet optical quartz glass, application spectral band 220-2500nm JGS3 infrared optical quartz glass, application spectrum band 260-3500nm
JGS1 is a synthetic quartz glass produced using SiCl as raw material and hydrogen oxygen flame. Its characteristics are no bubbles, extremely high purity, good UV transmittance, and an application wavelength of 175-2500nm. Due to the use of hydrogen oxygen flame production, it contains a large amount of hydroxyl groups (2000ppm). Synthetic quartz glass has a strong absorption peak at 2730nm and no particle structure. JGS2 is a quartz glass produced using quartz raw materials and hydrogen oxygen flame, containing several tens of ppm of metal impurities. There is an absorption peak at 2730nm (hydroxyl content 100-200ppm) with an applied wavelength of 200-2500nm. There are small bubbles, stripes, and particle structures. JGS3 is quartz glass produced using quartz raw materials and vacuum melting method, containing several tens of ppm of metal impurities. It has small bubbles, particle structure, and stripes, and almost no (OH), making it an ideal transparent infrared spectroscopy material with an application wavelength of 260-3500nm