Re: [MOPO] Bruce

[John Waldman]

So in other words, the spray really has no long term effect.

The paper keeps it's acid content, and the spray just neutralizes the acid short term.

John W

Dario Casadei <[EMAIL PROTECTED]> wrote:

Great product,
It will buffer for a good 2-3 years.

Hence "Buffer", there is a big difference from "impregnate" when soaking the poster in a  deacidifying bath the poster will be completely soak through and impregnated with Ca CO3.


Dario.

Randall Petersen wrote:

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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