Industrial gases are the gaseous materials that are manufactured for use in industry. The principal gases provided are nitrogen, oxygen, carbon dioxide, argon, hydrogen, helium and acetylene, although many other gases and mixtures are also available in gas cylinders. The industry producing these gases is also known as industrial gas, which is seen as also encompassing the supply of equipment and technology to produce and use the gases. Their production is a part of the wider chemical Industry.
Industrial gases are used in a wide range of industries, which include oil and gas, petrochemicals, chemicals, power, mining, steelmaking, metals, environmental protection, medicine, pharmaceuticals, biotechnology, food, water, fertilizers, nuclear power, electronics and aerospace. Industrial gas is sold to other industrial enterprises.
Medical gases are gases used in medical procedures. Some are used for treatment, some for anesthesia, and some for driving medical devices and tools. There are 7 kinds of gases commonly used: oxygen, nitrogen, nitrous oxide, argon, helium, carbon dioxide and compressed air. The medical gas system also includes vacuum suction system and anesthesia gas scavenging system.
Specialty gases typically refer to calibration gases, zero gases, carrier gases, span gases, instrumentation gases and bump test gases. They may be either pure gases or gas mixtures containing components at concentrations extending from the per cent range down to part per billion and sometimes even part per trillion. Specialty gases are used in analytical methods such as gas and liquid chromatography as well as Fourier transform infrared (FTIR) and non-dispersive infrared (NDIR). Other analytical methods are described in the various subpages.
Proper specialty equipment, including dedicated pressure regulators and distribution systems, should always be used with specialty gases to ensure the quality grade of the gas is not compromised through contact with sub-standard components. Generally speaking, the higher the quality grade of the gas, the higher the equipment quality should be
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