Posted by John Walker on December 17, 2001 at 16:48:41:
In Reply to: Re: Two words: Nitrox rocks! posted by Davej on December 17, 2001 at 08:24:16:
Dave, quit often blenders will op to use aviation grade oxygen. It costs approx. 1/3 that of medical grade and is breathing quality. Medical grade also required a lot of extra paper work.
Aviation grade oxygen is dry. Moisture contents have to be minimal to keep breathing equipment from freezing at those cold, high altitudes.
How many dives did you do in those twelve days?