Gas purity gases commonly used laboratory analytical instruments used (such as: non-combustible gas - nitrogen, carbon dioxide, inert gas - argon, helium, flammable gas - hydrogen, acetylene, combustion gas - oxygen, etc.), chemical reaction test experimental gas (chlorine) and auxiliary experiments using gas, compressed air use.

Laboratory supply mode: dispersed gas, centralized gas supply

Dispersed gas: gas cylinders or gas generator on instrumental analysis room, close to the point of use. Poor security, require the use of explosion-proof cylinder cabinet with alarm and exhaust functions.

Centralized gas supply: including buses, gas pipeline section, the second part of the shunt regulator, the terminal portion.