Howard Winter <HDRW <at> H2Org.demon.co.uk> writes:

> First, I think you'll find tearing Tyvek is incredibly hard to do - certainly 
> wouldn't happen in the ordinary course of shipping and storage.  And if it was 

I think that between a 19 inch rackmount device that weighs over 20 lbs and is
full of hard edges and BNC connectors and other Tyvek-unfriendly devices, and a
Tyvek bag that contains at least 1/2 lbs of bentonite and is packed into the
same space it would be an uneven fight. But someone must have done their testing.

> Secondly, I believe Tyvek acts like Goretex - it allows water vapour to pass 
> through it, but not actual water droplets, so even if it got wet enough to 
> develop a slurry I don't think it could escape if the bag wasn't compromised.

This is probably true. I think that the role of a desiccant is to keep humidity
low enough that there is no condensation on the device being protected. So it's
not supposed to be used as a tea-bag. But I was curious about the tea-bag use
for other purposes as I wrote. Anyway I'd try this with silica gel or activated
charcoal (which also absorbs water in huge quantities). I wonder if I can
confirm concentration by observing the absorber's temperature while wetting it
with solution. It should go down if any concentration change happens, I think
(or: it should go down more than when absorbing the solvent alone).

Peter P.


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