Digital BW, The Print

Light Impressions carries a product that may or may not be one of the 
products you mention. It's in their conservation section.

www.lightimpressionsdirect.com/servlet/OnlineShopping 

It comes in a spray can or a bottle for brush on application. It 
sounds intriguing but is the back of the paper a different Ph from 
the coating? How much would you gain? I guess there is no way to know 
except to try it and perform a fade test...


--- In DigitalBlackandWhiteThePrint@y..., "Paul Roark" 
<paul.roark@v...> wrote:
> Does anyone have any experience with or knowledge relating to the 
issue of
> deacidifying paper?
> 
> There appears to be a large body of information relating to mass
> deacidifying the huge body of old documents that are now self-
destructing
> due to the acid content of the paper used.  A related issue is 
deacidifying
> individual papers, posters, etc.  The goal, of course, is to extend 
the life
> of these papers.  Numbers like 300 - 500 years are tossed around.  
It
> appears to be a big deal with some lofty claims.
> 
> The process is to impregnate an acidic paper with acid-neutralizing
> chemicals and buffering.
> 
> Two companies have sprays that are said to be ideal for individual 
posters,
> etc.  These two products are called "Wei T'o" (the name of a 
Chinese god who
> protects books) and Bookkeeper.  The Wei T'o website has substantial
> information on it.  See http://weito.com/intro.htm
> 
> A several year old test on a Stanford cite draws into question the
> effectiveness of the Bookkeeper spray product, while indirectly 
indicating
> to me that the overall approach does have merit.
> 
> The obvious concept:  why not just spray the back of EAM with a Wei 
T'o
> spray to deacidify the paper while not touching the surface (where 
buffering
> might reduce the lightfastness of the pigments).
> 
> If we can't find a better-looking paper, maybe we can make the 
paper better.
> 
> Paul
> http://www.PaulRoark.com