kodak hypo wash

Discussion in 'B&W: Film, Paper, Chemistry' started by cdat, Jun 3, 2009.

  1. cdat

    cdat Member

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    I would like to try some toning using Kodak Rapid Selenium toner. The instructions call for using Kodak Hypo Wash ist. Is there any difference between using the kodak product and using something along the lines of Adorama "archival" wash? It appears to my quite possibly uninformed eyes that they do basically the same thing.
    Thanks for any help.

    John
     
  2. ann

    ann Subscriber

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    shouldn't make any difference
     
  3. Ian Grant

    Ian Grant Subscriber

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    A 2% solution of Sodium Sulphite would work just as well and is much cheaper, it's the principle ingredient in most Wash aids.

    Ian
     
  4. Anscojohn

    Anscojohn Subscriber

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    Yup. And if one needs to complexify the simple and obvious, throw in some sodium bisulphite.
     
  5. Alessandro Serrao

    Alessandro Serrao Member

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    So it's safe to say that if I don't reuse hca and I wash negatives before treating after fixing I can safely use only a 2% sodium sulfite solution, skipping all other ingredients?
     
  6. cdat

    cdat Member

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    Thanks

    Appreciate the info, I already have the archival wash, but will use the sodium sulfite in the future.
    Thanks
    John
     
  7. Ian Grant

    Ian Grant Subscriber

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    Yes, but in practice HCA isn't rally needed with negatives as the fixer washes more easily out of the gelatin, it;s far more important with fibre based prints were the semi-soluble silver-thiosulphate complexes for weak bonds with the cellulose in the fibres of the paper.

    Ian
     
  8. dancqu

    dancqu Member

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    Sodium sulfite as well as serving as a hca also assures
    an alkaline condition of films and papers prior to their
    treatment in a selenium toner. If the fixer is alkaline
    then a water rinse may suffice.

    A teaspoon of sodium carbonate in a liter of water
    should do just as well. Kodak and Ilford only
    offer acidic fixers. Dan
     
  9. Martin Aislabie

    Martin Aislabie Subscriber

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    If you are going to try Selenium Toner and you are using FB paper, it is worth while using a Hypo Wash (of what ever flavour you choose) both before and after toning.

    Doing so avoids staining - which can sometime appear only as the print dries which is a complete PITA

    Martin