We are about to purchase a new fire-protection safe for our original donor
forms and other important records.  The new data safes seem the way to go,
as they maintain a humidity level of 80% or less during a fire.  However,
the data safes come in two varieties, and we'd like advice on which is
best.  One is a shell within a shell with a humidity releasing agent in the
outer shell.  The other variety has an insulator with some proprietary name
(the name varies with the company) resulting in thinner walls with no
release of moisture.  Does anyone have any experience or knowledge of
either of these, from a conservation standpoint?  Does the insulation
offgas in a way that will damage the paper?  Any information would be
appreciated.

Paula Liken
Curator of Collections
Mesa Southwest Museum
Mesa, Arizona

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