I use the stuff in the aluminum containers, sold in, wonder of wonders,
camera stores, about six bucks a tin. Works great. This includes the
indicator, deep blue when dry, light pink when filled. Bake at 300 degrees
for an hour, back in the cabinet.
Apparently the indicator is a special addition, not the nature of the
silica. You can buy a brand of scoopable kitty litter that is around ten to
fifteen dollars for a large bag, that is exactly the same stuff, without the
indicator. I think it is unnecessary in that use, as Kitty provides his own
indicator. This was mentioned on another list, as an affordable alternative
to the prepackaged products.
Bill Pearce
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