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Date: Fri, 14 Nov 1997 17:04:42 -0600
From: Jason Weisacosky <hypoxic@tr*.mi*.or*>
To: Atle Aamodt <aaamodt@on*.no*>
CC: Techdiver mail-list <techdiver@aquanaut.com>,
     Cave divers mail-list , cavers@aq*.co*
Subject: Re: Helium and purity
You're right. It depends on the He PPO2, the N2 PPO2, or the O2 PPO2.
Whichever is the highest, you have to go with that one and then subtract the
PPO2.  Unless you're a Tech Diver, you will probably not understand this,
though.  It takes time----Jason

Atle Aamodt wrote:

> Anyone.
>
> >From a practical point of view, how pure must  helium used in trimix
> actually be ?.
> I guess this depends upon the He ppO2 during the exposure ? Can anyone
> enlight me on this one ?
>
> Regards
>
> Atle Aamodt
>
> --
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