" Modern Photographic Processing " by Grant Haist,
Wiley-Interscience-Publication, 1979
where you can find in Volume I a lengthy article about hypo elimination with
several recipes.
Thiosulfate elimination can be accelerated by the use of two cleasses of
chemicals: (1) compound that act by physically displacing the thiosulfates from
the photographic material by an ion-exchange action (i.e. diluted sulfite) and
(2) compunds that react with thiosulfate, usually oxidizing it to a form that is
more soluble (hypoclorite, hydrogen peroxide ...).
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| Dr. Rudolf Gschwind |
| Inst. of Phys. Chemistry , University of Basel |
| Scientific Photography Lab, |
| Klingelbergstrasse 80, CH-4056 Basel, Switzerland |
| gschwind@foto.chemie.unibas.ch http://www.foto.chemie.unibas.ch |
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