>Nitrogen by itself is a big mistake. The surface tension caused by high >ppn2's without the presence of helium causes the red blood cells to >become rigid, and since the are biconcave disks that are intended to >fold and bend to get through the small cappilaries, this rigidity is not >good. They anurize the walls of the vessels they are jamming through, or >just become stuck. So what PP ratio of helium/nitrogen is sufficient to eliminate this effect? And, do you think it is worth addding some He to the mix anytime the PPN2 is higher than 4.0? Even if the intended depth is only in the 140 - 160 fsw range? E.J. ______________________________ E.J. Sadler / Particle Studios ejsadler@pa*.ne* 800.704.3900 http://particles.net ______________________________ -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send list subscription requests to `techdiver-request@aquanaut.com'.
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