At 5:49 PM -0500 10/12/02, Paul D. Farrar wrote:
>It's corrosive. It turns into a soup. It climbs up the walls of, and out of,
>its container.
Pure calcium chloride does this, but when mixed with clay (which strongly
absorbs water) no creepage is seen. More to the point, the muslin bag
containing the granular material (salty clay) does not get wet. So corrosive
dust is the remaining issue.
Joe
>----- Original Message -----
>From: "Joe Gwinn" <joegwinn@xxxxxxxxx>
>To: <olympus@xxxxxxxxxxxxxxx>
>Sent: Saturday, October 12, 2002 11:15 AM
>Subject: [OM] Drying agents for photo equipment storage containers
>
>
> > Recently, I found a "dehumidifier" product called "damp gone" in the
>local hardware store. The cost is low, a few US dollars for 12 ounces (340
>grams), so I bought it and am trying it out. The maker is Rutland Products
>of Rutland, Vermont, USA, and the product number is "item # 620". (I have
>not seen local sources of the silica drying granules.)
> >
> > The material looks and smells like kitty litter, which is made of clay.
>The warnings on the container say that it contains calcium chloride, so the
>most likely composition is clay plus calcium chloride, made into a granular
>form. (One could make this oneself, simply by soaking kitty litter in a
>calcium chloride solution. Calcium chloride is sold during the winter as a
>sidewalk deicer in many hardware stores.)
[snip]
< This message was delivered via the Olympus Mailing List >
< For questions, mailto:owner-olympus@xxxxxxxxxxxxxxx >
< Web Page: http://Zuiko.sls.bc.ca/swright/olympuslist.html >
|