From: Eric Neilsen (e.neilsen@worldnet.att.net)
Date: 04/06/00-11:04:59 PM Z
"Jeffrey D. Mathias" wrote:
> Eric wrote:
> > As for the rest, good work. I would ask if you checked into the possibility
> > of adding Oxalic acid to the developer and to monitor the pH of your develop
> > to see what amount of Oxalic acid should or could be added to a Potassium
> > Oxalate developer to help prevent the formation of compounds that might lead
> > to fogging rather than calling for fresh developer?
>
> Please let us know after you do the experiment. The compounds, I
> suspect, are those which wash off into the developer after being
> exposed. I do not expect that a change in pH or Oxalic Acid would do
> much. But do let us know.
>
> > And are you making or buying your potassium oxalate?
>
> I bought a bunch from B&S some time ago, but it is running out.
>
>
I will let you know. I was just getting ready to make another couple of gallons
of developer, so I'll have some fresh to test against my "aged" developer. I'll
also run some other test and let you know about those.
-- Eric J. Neilsen 4101 Commerce Street, Suite #9 Dallas, TX 75226 214-827-8301 http://e.neilsen.home.att.net http://www.ericneilsenphotography.com
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