[pure-silver] Adding Sodium Sulfite to Sodium Thiosufale.
- From: Bogdan <bkarasek@xxxxxxxxxxxx>
- To: pure-silver@xxxxxxxxxxxxx
- Date: Sat, 02 Apr 2011 17:48:17 -0400
hi all,
In the discussion on using 2 bath Sodium thiosulfate, someone mentioned
adding Sodium sulfite to prolong the keeping properties of simple hypo.
I'm using Anchell's "Darkroom Cookbook" as my reference for my chemistry.
For plain hypo, He recommends 480.0 grams of Sodium Thiosulfate per 2 L
of water; how much Sodium sulphite should I add to assure longevity.
Till now, I have never added Sodium Sulfite to the hypo and would tone
the prints in 1:9 KRST (no additives) and then wash.
Any suggestions of the amount I should add to the hypo?
Cheers,
bogdan
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