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To: John
To: HC <jhc@wo*.st*.co*>
Subject: Re: Hydrogen Sulfide
From: Sten Meyer <m87stme@mt*.ch*.se*>
Cc: wei@cs*.fs*.ed*
Cc: techdiver@opal.com
Date: Wed, 8 Mar 1995 19:04:52 +0100 (MET)

On Tue, 7 Mar 1995, John HC wrote:

> 7. The danger of diving in H2S in a normal regulator is that every time you 
> exhale, a small amount of the surrounding fluid (droplets) enter into the 
> air chamber of the second stage. Those droplets are "atomized" and 
> inhaled at the next draw of breath.

Yet an other reason to use my old AGA ffm. Mine is with positve pressure 
breating and the manual calims a "filter-factor" as good as 1E+55.
This is better than all filter gas-masks, and can be interpreted that
the concentration af a toxig gas outside is 100000 times higher than
the inspiered concentration.

/Sten Meyer                   m87stme@mt*.ch*.se*

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