Re: Dissolving Ferric Oxalate Kallitype

I finally got my answer from my supplier jdphotochem who apologised and
kindly offered to refund my purchase. The material they supplied me was
labeled sic. "Ferric (Ferrous) Oxalate" on their bottle. I'm reading an old
thread that Ed Buffaloe posted and Jeffrey Mathias replied to:

/lists/alt-photo-process/2003/jun03/0178.htm

It sounds very similar to my problem ie. mud at the bottom of the bottle.
Could someone give me the details of the "potassium permanganate method" of
producing Ferric Oxalate for Kallitype, Pt/Pd? Is it reliable? Is there a
use for raw "Ferrous" Oxalate powder in alt-photo? Thx.

~m

----- Original Message -----
From: "Eric Neilsen" <e.neilsen@worldnet.att.net>
To: <alt-photo-process-l@sask.usask.ca>
Sent: Wednesday, January 25, 2006 11:18 AM
Subject: RE: Dissolving Ferric Oxalate Kallitype

> Mike, The recipe that I use is one from Dick Stevens's book on the
> Kallitype. He list three and I use Ammonium Ferrous Sulfate (AFS), Oxalic
> Acid and 35% Hydrogen peroxide. The yield of 2.5 liters would be mixed up
> 2.5 kilos of AFS. I make it in smaller batches; usually around 300 to 500
> ml. The concentration is in direct response to your ability to follow
> procedure that YOU set for yourself. By that I mean, there are guidelines
> for what to do, but because this is so "ill defined" it is important to do
> it the same time after time to have the "same" stuff.
>
> I find that using very little water a certain stages, helps to increase
the
> concentration. This could be why I use my salts at different
concentrations
> than others. I will extract the pages of my book that deal with that and
> post it on my web site for download. If anyone is interested, let me know
> and I'll send you the appropriate log in info to an ftp site.
>
> As for storing a liquid form? Well if you can make it to a liquid, you
> should be able to fix your liquid. There will be a point that for
> consistency in printing, that may not be the best approach over the long
> run.
>
> Eric
>
> Eric Neilsen Photography
> 4101 Commerce Street, Suite 9
> Dallas, TX 75226
> 214-827-8301
> http://ericneilsenphotography.com
> > -----Original Message-----
> > From: Michael Koch-Schulte [mailto:mkochsch@shaw.ca]
> > Sent: Wednesday, January 25, 2006 10:13 AM
> > To: alt-photo-process-l@sask.usask.ca
> > Subject: Re: Dissolving Ferric Oxalate Kallitype
> >
> > Interesting Eric. Are you using your own recipe to make the
> > liquid Ferric
> > Oxalate?
>
> [EJ Neilsen] big snip
>
Received on Fri Feb 10 14:21:34 2006