| If we are talking about 21/35 or 18/45 as standard gas or more hypoxic mixes (not triox), if the O2 is right the helium should be about right as well. It is quite hard to unintentionally pp-mix a trimix very wrong so that the O2 would still match.
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"If there is magic on this planet, it is contained in water."
Loran Eisley, The Immense Journey, 1957 |