Héliair
To héliair, also called " commonly; trimix of the pauvre" , is a Trimix manufactured containing Hélium and of Air. Contrary to the Trimix, there is not an addition of Oxygène.
There are two reasons with the use of this mixture which are rather of economic order and practical. Indeed, the quantity of oxygen relatively low being compared with a Nitrox or a Trimix, this mixture does not require a degreased specific material. Moreover, it is easier to realize.
This mixture is used little because the plunger having access to helium often have access to degreased material and oxygen.
See too
Other mixtures for the diving: Héliox, Nitrox, Trimix
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