Krypton-xenon mixture is obtained from atmospheric air by intermediate purification from hydrocarbons and their oxidation products. Krypton-xenon mixture is used to produce krypton and xenon used in the electrical industry.
Neon-helium mixture is obtained by extraction from under the condenser lid of a double rectification oxygen apparatus, where gaseous neon and helium are collected, as they liquefy at a lower temperature than nitrogen. The neon-helium mixture is supplied in steel cylinders.
It is used in electric lighting technology as a raw material for the production of neon.
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