U of S | Mailing List Archive | alt-photo-process-l | Re: Eliminating CaCO3 in buffer in "achival" watercolor papers

Re: Eliminating CaCO3 in buffer in "achival" watercolor papers

Hi Loris,

I'm sorry about the spelling. It is a common lime solvent in these parts. Some kind of acid which can be used to clean away limescale in kettles etc. Get it from migros etc..It's a liquid and it dilutes easily and quickly.


On Aug 13 2008, Loris Medici wrote:

Hi David, what is Porcges (sp)?


12 Aðustos 2008, Salý, 7:45 pm tarihinde, davidhatton@totalise.co.uk yazmýþ:
> Hi Loris,
> What about a mild solution of Porcges (sp) and a rinse in distilled water
> afterward
> David
> On Aug 12 2008, Loris Medici wrote:
> Thanks Diana,
> I also thought about citric acid but the product is insoluble Calcium
> Citrate (a food additive), thus, it remains in the paper. I'd prefer
> something that totally leaves the paper. Calcium citrate may interfere
> with the process I intend to use - maybe that's why you didn't
> get perfect
> results...
> Thanks again,
> Loris.