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 David, what is Porcges (sp)?

Regards,
Loris.


12 Ağustos 2008, Salı, 7:45 pm tarihinde, davidhatton@totalise.co.uk yazmış:
>
>
>  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.