Jim

I think you may not realise the obvious benefits of our "cheesey smelling   
limey helium".

Standard procedure in the UK is to analyse the gas for O2 content then   
analyse for He content.  Standard O2 galvanic cells are used for O2   
analysis as elsewhere.  He analysis is by taste.  Gases in the 20-40% He   
content taste like Mild Cheddar, 40-50% are Medium Cheddar, 50-60% are   
Mature.  I must confess that I have not yet had to sample a mix greater   
than this but I have it on reliable information that Extra Mature covers   
everything else.  This has been proven empirically to be more accurate   
than the Donald Duck test as used by many divers on the other side of the   
pond when analysing tasteless seppo He.

Naturally, a UK Trimix diver always carries a packet of crackers on each   
dive.

At least our He does not taste of Garlic like that breathed across the   
Channel.

David Shimell
Project Manager, Sequent Computer Systems Ltd, Weybridge, UK
Email: shimell@se*.co*

 ----------
From:  owner-techdiver[SMTP:owner-techdiver@aquanaut.com]
Sent:  18 November 1997 21:36
To:  Chuck Noe
Cc:  'Techdiver'; Cavers Mailing List
Subject:  Re: Diving related question about Helium.

Chuck-

You know I built one of those before, but all it would make is that
cheesey smelling limey helium. You figured out a way around that?

   Jim

On 11/18/97 11:28 PM Chuck Noe wrote:

>Jim,
>
>Maybe you or Landon would be interested in the new Helium generator   
we're
>developing. Its really pretty simple. You pour in a little distilled
>water, turn a couple knobs, throw a switch, and laboratory grade helium
>comes out a pvc pipe on one end; and the whole thing operates on 12
>volts. The only problem is we are trying to figure out how to dissipate
>all the heat the darned thing gives off. Should be ready for market by
>DEMA '99.
>
>Chuck


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