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Date: 30 May 97 14:28:44 +0000
From: "Eric d'Souza" <ericd@ru*.co*.uk*>
Subject: RE>Re: Standards, Deep Air, Narcotic Mixes - Three Wedings and a few Funerals
To: gmirvine <gmirvine@sa*.ne*>
CC: "techdiver@aquanaut.com" <techdiver@aquanaut.com>

Hi George,
=20
 I've been reading your recent posts with great interest. They have been
very informative. I'd be grateful if you could explain some points to a
non techie.

1) Is the main reason for a 40m (130 ft) limit on aed due mostly
     to Nitrogen or O2 ?

2)  Is Nitrox more likely to cause narcs at a given depth than air ?

3)  Are the ppO2 's involved in diving with Nitrox 32 and 36 undesirable =
?

4)  Since Nitrox can only be used at shallow depths without ppO2
      problems, is there much of a case for it other than a stage deco mi=
x ?

cheers

Eric

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