- Hypo clear agent (HCA) is almost entirely sulfite.
- XTOL, D-76, and similar are high in sulfite.
That is, pour the dev back into the tank after fixing to help remove the thiosulfate. Is there any harm in doing this?
Mark Overton
EDIT: The title should have been "one-shot", not "old-shot", and edit won't let me edit it. Sigh.
