[pure-silver] Re: Fixer Stain Removal
- From: "Richard Knoppow" <dickburk@xxxxxxxxxxxxx>
- To: <pure-silver@xxxxxxxxxxxxx>
- Date: Tue, 10 Nov 2009 07:38:45 -0800
----- Original Message -----
From: <C.Breukel@xxxxxxx>
To: <pure-silver@xxxxxxxxxxxxx>
Sent: Tuesday, November 10, 2009 12:31 AM
Subject: [pure-silver] Re: Fixer Stain Removal
Richard
Do you happen to have a formula for TC-1?
Very complicated
Kodak TC-1
Water 1.0 liter
Potassium bichromate 90.0 grams
Sulfuric acid, concentrated 90.0 ml
There are a number of variations of this which
demonstrate mainly that the amounts are not at all critical.
The usual Kodak warning holds, add acid to water never
the other way.
I found out that the stuff is reusable even when it
looks quite ugly.
Sodium sulfite solution, or Kodak Hypo Clearing Agent
will remove yellow stains if any are left.
--
Richard Knoppow
Los Angeles, CA, USA
dickburk@xxxxxxxxxxxxx
..tried that cleaner once on a really dirty Nova Quad (slots
were black
from colour chemistry I assume). It did remove a lot, but
not all..
Best,
Cor
TC-1 works mostly on silver. There is other stuff in
color processors, I don't know what is used for it. Perhaps
a strong caustic solution (sodium hydroxide for instance).
--
Richard Knoppow
Los Angeles, CA, USA
dickburk@xxxxxxxxxxxxx
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