Digital BW, The Print

Where can I buy the Grumbacher B77 in Europe?

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Paul Roark" 
<paul.roark@v...> wrote:
> >...should I use Lyson Print Guard on papers like hahnemuhle 
William 
> >Turner or Luminos Museum Parchment or Legion Somerset 
> >enhanced?
> 
> Print Guard appears to be the same as PremierArt Print Shield, 
which has
> been tested by Wilhelm.  See 
> http://www.wilhelm-research.com/pdf/WIR_Ep9600_2003_11_01.pdf
> Some of the papers were sprayed with PremeirArt, and it appeared 
to help the
> lightfastness and not affect the paper life estimate to the extent 
of the
> testing (to >200 years).
> 
> >What is the long term effect of Print guard. Does it eventually 
> >crack or discolor.
> 
> These companies are not disclosing what the products are.  Solvent 
based
> acrylics have the best reputations for not yellowing, and I assume 
that is
> what these are.  My past research led me to Rohm & Haas's B72 
formula as the
> most trusted by conservators.  Grumbacher Tuffilm is apparently 
the same
> thing and readily available at art stores.  
> 
> See the statements of Ross Merrill, Chief of Conservation at the 
National
> Gallery of Art, Washington D.C. (USA), below.  In a 1997 speech 
regarding
> pastel conservation he said as follows regarding fixatives (which 
these
> are):
> 
> "Today there are a number of alternatives. Krylon Acrylic Varnish 
B72 is
> used by conservators.  [Krylon no longer makes this, Lascaux 
Fixativ is the
> only true Rohm & Haas B72 that I know of.] This product will remain
> unchanged for 400 years, but does have a tendency to saturate the 
surface.
> Grumbacher B77 varnish or "tough film" is the same as B72, but 
will not
> saturate..." See <http://www.bmi.net/knapp/iapsmerrill.html> 
> 
> I prefer the Lyson or PremierArt for glossy prints because it is 
easier to
> get an even spray.  For matte prints the Grumbacher or Lascaux has 
worked
> fine.  Grumbacher is probably the cheapest and most readily 
available of the
> products.  I think it has been used by pastel painters for many 
years.
> 
> Paul
> www.PaulRoark.com