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Gary,
The issue Jan is concerned with has more to do with vascular physiology than
an oxtox issue. However, the statement, "...for solo diver making custom
blends and profiles?" makes any meaningful discussion a moot point. Like
putting racing tires on a '64 Ford falcon.
C.



----- Original Message ----- 
From: "Gary Hagland" <haglandg@to*.co*>
To: <techdiver@aquanaut.com>
Sent: Monday, July 14, 2003 10:00 AM
Subject: Re: What ppO2 for bottom mix?


> Jan,
> Oxtox is a crap shoot.  With the studies that have been done, the only
> constant seems to be its unpredictability.  However, last year in Florida,
> divers convulsed and died at PO2 1.48 and 1.28.  To be honest, don't know
> if there were extenuating circumstances, but it should give us reason to
> question our assumptions that 1.4 is absolutely safe.  Also, I think we
> should acknowledge that the deeper you go, the less chance of a successful
> recovery from one of these incidents.
> Gary
>
> At 11:18 AM 7/14/03 +0200, you wrote:
> >What ppO2 should I use for typical series nitrox or normoxic trimix OC
> >diving?
> >
> >I learnt 1,4 is safe limit for a bottom mix and 1,6 for deco. Of course
if
> >there are following dives then all limits on deco should be watched
> >carefully. Why some people advice me it's better to use 1,1- or 1,2? I
don't
> >know any reason for this. Maybe for CCR divers there are reasons but for
OC?
> >
> >What is the reason some folks recommend Tx 21/35 for a 45 meters wreck
with
> >up to 30 minutes BT? I personaly prefer to use 26/25. All other divers
have
> >different mixes so there is no need or possibility to be dependant on
buddy.
> >
> >What advantage have GUE standard mix for above dive  for solo diver
making
> >custom blends and profiles?
> >
> >Jan Werbiñski       O0oo....._[:]) bul, bul, bul
> >Strona domowa http://www.janwer.com/ [
http://pa54.zgora.sdi.tpnet.pl/jw/ ]
> >Nasza sieæ http://www.fredry.net/ [ http://pa54.zgora.sdi.tpnet.pl/ ]
> >
> >
> >--
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>
>
>
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