Re: Iron Blue Bleeding and Staining

Looks like way too much acid.

On Tue, 18 Oct 2005 15:36:17 -0400, rhobbs3@aol.com said:
> I have previously used an iron blue toner withouttoo much staining, most
> of which cleared in the wash. I was using oldish ferric ammonium
> citrate, thesame that I use for cyanotype sensitizer. When the old stuff
> ran out, I got new from photographer's formulary. Now all of a sudden, I
> have massive color bleeding outof RC paper and staining like crazy. I
> tried diluting, but no real benefit. Any ideas?
>
> formula is:
> 8g Ferric ammonium citrate
> 8g potassium ferricyanide
> 80 ml 99% acetic acid
> water to make 1 liter.
>
> thanks,
> Rob
Received on Tue Oct 18 14:29:56 2005