At 4:13 PM +0200 5/7/02, Roger D. Key wrote:
Regarding silica gel, is it not necessary to recharge it reasonable
regularly by warming it up? In my local hardware store, I can buy a
'dehumidifier' that consists of a holder for a large bag of silica gel (I
think), that sits over a water holder. Instructions are to replace the
silica with a new refill when it begins to drip water into the water
holder. That suggests that silica gel can get pretty wet once the original
wrapping round a camera or lens box is removed.
Anyone know the correct answer? I know that the small packets of gel often
have instructions printed on them to throw them away.
Those big things you get in the hardware store aren't silica gel, they're
another chemical entirely, non-reusable. You can dry silica gel by heating
to about 120 C, but many of the packets don't really survive that kind of
heat...
paul
--
Paul Wallich pw@xxxxxxxxx
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