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Inerting, cooling and welding for your industry

Helium, a chemically inert gas, plays a critical role in a wide array of industries and applications, including electronics. Air Liquide supplies this pure specialty gas in many volumes, depending on your needs.


In the electronics industry, helium is employed for purging, annealing, sputtering, leak checking and etching applications. It is also used for backside temperature control to maintain uniform water temperature during critical deposition processes and cool down tools following high temperature cleaning cycles.

It is also essential to the fiber optics sector, used to create the highly purified glass preform from which the fibers are made. It also key to the cooling process and enables high-speed, high-volume production.

Laboratories and Research

Air Liquide engineers various grades of pure helium under the ALPHAGAZ™ brand. ALPHAGAZ™ 1 grade of pure helium has a purity of 99.9995%. ALPHAGAZ™ 2 is ultra-pure at 99.9999%, perfect for critical laboratory and analytic applications. Both ALPHAGAZ™ grades of helium come in compressed gas cylinders equipped with ergonomic open caps and SMARTOP™ valves. 

MRI (Magnetic Resonance Imaging)

MRI scanners, which are mainly utilized to detect tumors and tissue abnormalities, use liquid helium to cool the large magnet that maintains the extremely low temperatures necessary for the machine to function properly.


Helium is widely used in the welding industry as an inert shielding gas for arc welding. It is utilized both as a pure gas and in mixtures with argon for TIG or MIG welding. In some applications, helium has an advantage over argon in gas-shielded arc welding because it provides greater arc heat for the same welding currents and arc length. This results in deeper penetration, which is preferable for welding heavier materials that require greater welding speed or when metals of high thermal conductivity are to be welded.


Helium gas with oxygen in diving tanks prevents the narcotic effect of nitrogen in deep waters. Industries with operations offshore rely on diving gases and breathing mixtures for subsea work.