Re: [PSUBS-MAILIST] A question on rebreathers and scrubbers

[Warren Greenway <opensourcesub@yahoo.com>]

Here is the trick. I talked to Anthony Fontana (the
physicist) and he said that the equipment we produce
is ideal for measuring the quality of sofnolime or
similar products (including home made). The only real
issue is the cost of the equipment. The device is
called the Pawkit and costs around $1K. This is 
obviously too steep for you average Psubber. However,
there is a steep discount that would likely be 
available, and our lab could run samples (I'm not sure
what this costs.) We have another system that should 
be around $300. Both of these systems are portable
handheld instruments. Anthony volunteered to run some
research on the Sofnolime and home-made or competetive
equivalents to create an isotherm for the material and
verify the valididty of the readings. If anyone has a
sample of sofnolime or equivalent they could send 
Anthony, that would be great (a few ounces is plenty).

Warren.

--- John Brownlee <jonnie@scarymonsters.net> wrote:
> 	Another issue with kiln lime is how you package and
> preserve it.
> Remember, we live in a reactive (sometimes wet)
> oxygenated atmosphere.
> Cartridges for scrubbers are often sealed for
> freshness, and carry a
> visual aid to determine if their capacity as an
> absorbent has been used up
> in storage. This is the tell-tale blue flecks you
> might see in
> manufactured cartridges.
> 	I thought this particular question might also be
> related to the
> concrete sub thread earlier last month. In that
> case, the physical
> properties of the resultant cement are the root of
> the inquiry, not
> scrubbers. Damned useful things, those various
> oxides of calcium.
> 
> -- 
> 							John
> 
> John Brownlee
> Chief Systems Administrator
> Scary Monsters Network
> jonnie at scarymonsters dot net
> 


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