... visible light transmission are particularly good, and through the ultraviolet, infrared. Quartz glass is a good acid-proof materials, in addition to ... acid, nitric acid, hydrochloric acid, aqua regia, neutral salts, carbon and sulfur corrosion, the chemical stability of acid-resistant ceramic ... of germanium, silicon crystal in the crucible, boat pan heater core pipe and the bell and so on. In the ...