[pure-silver] Re: Unreachable Scum in Print Washer
- From: Steve Nicholls <gl1500@xxxxxxxxxxxxxxxx>
- To: pure-silver@xxxxxxxxxxxxx
- Date: Sun, 11 Mar 2007 11:27:46 +1030
EJ Neilsen wrote:
Have you tried Lime A way or an Acid bath made from Glacial acid? Those
should rid the system of calcium/mineral deposits and build up that is stuck
to that. Now for the iron and dirt particles that have avoided your filters?
You might try a mix of EDTA tera sodium. Do this after a good rinse in
between.
Eric
Eric do you know what the EDTA does in this situation?
Also to any chemists on list what is the purpose of EDTA in B&W
photographic formula? Can it be added to standard developers such as D76
in the same manner as PMK?
Curiously
Steve.
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