> Sheck's primary argument (during my training sessions) for using Heliair was > that it is easy to analyse. If you mix two known gas mix, you only need to > analyze one gas. In the present situation, analyzing O2 allows to determine > the amount of helium and also the amount of nitrogen. This makes better sense to me, because it's the same reason I prefer to use Heliair whenever possible on deep open-circuit dives. Aloha, Rich Richard Pyle deepreef@bi*.bi*.ha*.or* ******************************************************************* "WHATEVER happens to you when you willingly go underwater is COMPLETELY and ENTIRELY your own responsibility! If you cannot accept this responsibility, stay out of the water!" *******************************************************************
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