I used Bookkeepers on all my older more valuable posters, unless I'm
planning to linenback them (which I only do when restoration is needed).
I apply it liberally to both the front and back of each poster. Although
it looks 'wet' when you apply it, the carrier solvent is a non-aqueous one
which evaporates very quickly leaving the magnesium buffer behind; the
paper is not actually moistened. I have had NO problems with wrinkling,
curling, discoloration, or ink running. Now, how well it actually works
to deacidify a poster is another question, probably nowhere near as well
as a deacidifying bath but better than nothing. Also the stuff's not
cheap, and you go through it fast with larger pieces.
Randy
> Are you talking about using a product like Bookkeepers spray to deacidify
> the poster?
> Has anyone used this spray? And if so, how did the poster react to the
> spray? Rolling, wrinkles?
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