[pure-silver] William Mortensen's Local Negaive Reducer
- From: Peter De Smidt <pdesmidt@xxxxxxx>
- To: pure-silver@xxxxxxxxxxxxx
- Date: Wed, 15 Dec 2004 20:35:59 -0600
Here's another of Mortensen's formulas:
For local bleaching of negatives:
Water: 1oz.
Potasium Permanganate 1 gr.
Sulfuric acid 2 drops
Directions: "When the negative was developed and dried, it was subjected
to local reduction with permanganate. The negative was laid
emulsion-side up on an illuminated ground glass and the reducer solution
was carefully applied ...with a No.2 sable brush. The reduction of the
emulsion is complete when the permanganate turns reddish-brown. Immerse
the negative in hypo until cleared, then wash and dry as usual."
Btw. I'm calling these forumlas "Mortensens's" because he used them. I
doubt that he developed them.
-Peter De Smidt
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