Re: [Ammonium Iron(III) Oxalate and Sodium Chloroplatinate] in solution

Loris,

Could you explain why you would use the chloroplatinate instead of the
chloroplatinite for doing Satista prints? In my recent experiments with
Satista, Ifound that whereas chloroplatinite (one drop of a 5% solution)
worked fine with about 25-30 drops of ~25% FAO for an ~8x10" print, finding
a way to enhance the contrast would would be a worthwhile handle to have.
Also, using vellum instead of pictorico OHP transparencies as digineg medium
can effectively reduce contrast when required.

TIA for any elaboration you can provide.

Rajul

on 6/15/04 11:55 PM, Loris Medici at loris_medici@yahoo.com wrote:

> Hi all,
>
> I plan to mix Ammonium Iron(III) Oxalate and Sodium Chloroplatinate (as
> Satista sensitizer). Do these two compounds keep well in solution? (well
> = not less than 1 year)
>
> To be more specific, the mixture will be as following:
> 2ml %20 Sodium Chloroplatinate
> 98ml %25 Ammonium Iron(III) Oxalate
> (Yes I know both the Platinum and FAO solutions are weaker than
> "standard")
>
> Thanks in advance,
> Loris.
>
>
Received on Wed Jun 16 10:15:38 2004