Re: Eliminating CaCO3 in buffer in "achival" watercolor papers
Merci Etienne. I will go with acetic acid first, will keep that in mind. Have you used this method with Fabriano Artistico (old version / new Trad. White)? Regards, Loris. 12 Ağustos 2008, Salı, 8:38 pm tarihinde, etienne garbaux yazmış: > > I still use HCl to clear Pt prints, and an HCl pre-coating bath (in > both cases, followed by a tap water wash and two distilled water > rinses). The pre-coating bath (i) neutralizes any alkaline buffering > agent and (ii) dissolves the microscopic metal flecks that sometimes > appear in paper (from worn calendaring rollers, I'm told) and ruin Pt > prints. I generally use 0.5% HCl for both, although I have used up > to 2% in the pre-coating bath for some troublesome papers. My > routine is 10 minutes prior to coating, 5 minutes to clear. > > Best regards, > > etienne > > >
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