Use old-shot developer as hypo clear (HCA)?

Discussion in 'B&W: Film, Paper, Chemistry' started by albada, Mar 9, 2012.

  1. albada

    albada Member

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    1. Hypo clear agent (HCA) is almost entirely sulfite.
    2. XTOL, D-76, and similar are high in sulfite.
    That got me wondering: When using developer as a one-shot, could I use the used developer as HCA?
    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.
     
  2. Ian Grant

    Ian Grant Subscriber

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    It's important not to leave traces of developer in a print, stop bath (or a water rinse) and then .fixer help remove them so the last thing you need to do is reintroduce them.

    In addition if an print's been poorly fixed you'll end up with all sorts of stains.

    Ian
     
  3. albada

    albada Member

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    I was thinking of reusing the dev for film, not prints. If the ingredients in the dev wash out of the emulsion faster than thiosulfate, then shouldn't this work?

    Mark Overton
     
  4. Photo Engineer

    Photo Engineer Subscriber

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    HQ washes out of film at about the same rate as hypo does. (See Haist) Therefore, use of developer puts back into film, something that you really really don't want there. HQ yellows with keeping. Metol does too! I have no rates on its wash rate. Some developers turn pink or orange with keeping. You don't want them either.

    PE
     
  5. dehk

    dehk Member

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    Interesting Idea, and, good to know the answers.