(1) laser gas mixture: a common laser gas mixture there is helium-neon laser gas mixture, carbon dioxide mixed gas laser, krypton fluorine laser gas mixture, sealed-beam laser and excimer laser gas mixture mixed gas (2) Special equipment used in the mixture: Common special equipment used in the gas mixture including PR (P-10 gas), Q quenching gas, Geiger gas, tissue equivalent gas, nuclear radiation counter tubes gas, gas proportional counter tubes, electronic capture the mixed gas, FID fuel gas , spark chamber gas mixture, the spectrometer mixed gas chromatograph carrier gas (3) welding gas mixture: common industrial welding gas mixture may roughly be divided into binary mixture, ternary and quaternary mixed gas mixture into three categories. Commonly used binary mixture have Ar-He, Ar-N2, Ar-H2, Ar -O2, Ar-CO2, N2-H2, CO2-O2, etc; commonly ternary mixture have Ar-He-CO2, Ar -He-N2, Ar-He-O2, Ar-CO2-O2 and the like; quaternary gas mixture with less than primarily formulated from Ar, He, H2, O2, N2, CO2, etc. is made. (4) mixing fresh air: for meat, fruit, vegetables and grain mixture fresh, more varieties and specifications. Mixed gas mainly consists of carbon, nitrogen and oxygen and other components. Tissue oxygen makes vitamins and fat oxidation of fresh food and seafood; wherein the bacteria, although no bactericidal effect of carbon dioxide, but filamentous bacteria and inhibit the development of the role of aerobic bacteria hobby; nitrogen have antioxidant and prevent bacterial development role are active, it continues to consume oxygen, oxygen-free state in the muscle pigment myoglobin is reduced dimmed, namely beef, fish in the absence of oxygen circumstances, it can not play a role in preservation. Fresh mixture may be added a small amount of ethylene oxide to enhance bacterial killing ability. (5) electric light mixed gas: Mainly used as incandescent lamp, special light source lamp (such as infrared light, strong overflow lights, fluorescent lights, light signals, sun lamps, lamp ozone, photochemical lights, sterilization lights, ultraviolet lights, glow Light, zirconium arc lamps, halogen gas lighting, etc.) and a digital display tube filled with gas. Common varieties according to their livestock component into a rare gas mixture, a halogen compound mixture, mixing heavy hydrogen gas and argon gas mixture bulb. To extend lamp life, the preparation of a gas mixture of pure electric unit with a light source, the purity requirements generally should be greater than 99.99%, and should strictly control the content of the oxide-type impurity components, usually, the amount of water and oxygen, respectively, should be less than 2 * 10-2 (6) medical and biological research mixed gas: mixed gas of clinical medicine, health and epidemic prevention, medical and biological research in areas such as required, the main varieties: Mixed gas lung function, clinical blood gas analysis using a mixed gas, the brain cycling assay mixture, mixed gas laser surgery, biological atmosphere of mixed gas, mixed gas equivalent organization and radioactive tracer mixed gas. (7) disinfection mixture: Widely used in medical devices, cosmetics and stationery and packaging, transportation and other aspects of a class of sterilizing gas. This class has a disinfection gas permeation strong bactericidal disinfection equipment economic, easy to operate and metal corrosion, etc. I, so much people welcome. Its main principle is to use sterilized alkylation, so that life-sustaining indispensable material inerting, the most commonly used is the mixture of different proportions of ethylene oxide and carbon dioxide microbial organization, bactericidal effect and content of each component , temperature, humidity, time and stress and other factors. (8) Leak detection (alarm) gas mixture: a mixture of special leak, the different specifications and more. Common categories are helium, carbon halogen, sulfur hexafluoride and krypton-85 and so on. (9) The standard calibration gas: The standard calibration gas: 1, in standardization gas applications; 2, used in gas product quality supervision and quality control; 3, instrument calibration and calibration; 4, Atmospheric Environment Monitoring is inseparable from the standard calibration gas; 5, used in health care, clinical laboratory in; 6, evaluation of the analytical method. (10) breathing mixture: from 1% -20% O2 plus oxygen composition of helium or neon helium (Ne) gas mixture, mainly for artificial air in deep-sea diving and space flight operations, for the use of divers or astronauts breathe. In addition, this mixture can also be used with respiratory diseases such as asthma, throat diseases, pneumothorax and lung disease treatment, it can be used for general patients with hyperbaric therapy. (11) ELECTRONIC mixed gas: mixed gas electronics industry refers to large scale integrated circuit (LSI), very large scale integration (VLSI) semiconductor device fabrication, for vapor phase epitaxy, chemical vapor deposition, doping etching and ion implantation process (step) of a special kind of electronic mixture. There are epitaxial (growth) mixed gas, chemical vapor deposition using a mixed gas, a mixed gas doping, etching and other electronic mixed gas mixture.