Hydrogen chloride is an important industrial chemical used in the production of dyes, spices, drugs, various chlorides and corrosion inhibitors. In addition, high purity hydrogen chloride gas is widely used in the electronics industry. Electronic grade hydrogen chloride (purity ≥99.999%) is mainly used in vapor polishing, epitaxy and etching processes in the microelectronics industry, and can also be used in metal smelting, photoconductive communication and scientific research

The noble gases are almost unique in the world of gases: the other elemental gases, such as hydrogen and oxygen, are made up of molecules made of two atoms, whereas the six gases have only one atom each. Because of their structure, they are so difficult to react with that they were once called "noble gases."

What should we pay attention to when calibrating with standard mixture gas ?