[pure-silver] Re: Fixer Stain Removal
- From: "Richard Knoppow" <dickburk@xxxxxxxxxxxxx>
- To: <pure-silver@xxxxxxxxxxxxx>
- Date: Mon, 9 Nov 2009 20:10:34 -0800
----- Original Message -----
From: "Ralph W. Lambrecht" <info@xxxxxxxxxxxxxxxx>
To: <pure-silver@xxxxxxxxxxxxx>
Sent: Monday, November 09, 2009 2:10 PM
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
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