The difference between the method of cleaning the quartz tube and the glass tube.

1. It can be cleaned with hydrofluoric acid;

2. Wash or soak with fuming nitric acid or hot concentrated sulfuric acid for 3 to 5 minutes. If necessary, it can be washed again or repeated several times. the

3. Burn at high temperature and blow with steam. You can find a brush dipped in the decontamination paint to see if it can be brushed off. It can be cleaned with sodium hydroxide and potassium hydroxide solution. If it is metal or inorganic, you can soak it in aqua regia for a while, and then clean it. Or use high temperature to bake to see if the white object is volatilized. Although the quartz tube of the tube furnace has good high temperature resistance and corrosion resistance, if the tube furnace is used for a long time and the temperature reaches more than 800 degrees, the quartz tube will slowly crystallize and become opaque, which is the white object we see. For such objects, there is no way to clean them with ordinary cleaning methods.

The difference between quartz glass and ordinary glass is the degree of heat resistance. Quartz glass can withstand unexpected temperatures, such as putting it in water immediately after burning red in a fire without bursting! ! Ordinary glass does not burst when it is put into water after being heated red, but it just falls apart when it is heated. Generally speaking, if you pour freshly boiled hot water into a glass without bursting, it is already a good glass, but this still belongs to the category of ordinary glass. The production cost of quartz glass is relatively high, and they are only used in places with special performance requirements. Therefore, it is difficult to find it in the general market. The glass cup on the picture given by the poster is not quartz glass.

(1) It is not worthwhile to make a cup from quartz glass, and there is no need to use quartz glass for the cup, because the excellent performance of quartz glass cannot be exerted at all;

(2) It seems that this cup is crystal clear, and it is not made of quartz glass at all. This cup is just an ordinary glass cup. If it is poured with boiling water and it does not explode, and the texture is more beautiful, it can only be "ordinary glass with special properties" at best.

Donghai County ALFA Quartz Products Co., Ltd., ALFA adheres to sincere service and complete production equipment. Welcome friends from all over the country to inquire and negotiate cooperation.