TF-4 fixer: Storing leftover concentrate

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

  1. albada

    albada Subscriber

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    I used about one third of the concentrate to fill a 1.5L bottle with working fixer.
    Can the remaining concentrate be refrigerated? I'd like to maximise its shelf-life.

    TIA!

    Mark Overton
     
  2. Stephanie Brim

    Stephanie Brim Member

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    I stored mine in the plastic bottle it came in, in the basement, in normal basement conditions. It was good three years later. YMMV.
     
  3. chriscrawfordphoto

    chriscrawfordphoto Subscriber

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    I always mix it all at once because the concentrate is not fully dissolved....its possible by mixing just part, you are not getting the right amount of the chemicals in the part you use.
     
  4. Stephanie Brim

    Stephanie Brim Member

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    I always just shake the concentrate really, really well and I've *never* had a problem.
     
  5. PhotoJim

    PhotoJim Member

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    It will keep longer as a stock solution than mixed, so if you mix it thoroughly and then mix up what you need, you'll tend to be able to keep the unused portion longer.
     
  6. Richard S. (rich815)

    Richard S. (rich815) Subscriber

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    Same here. Would not know where to store 4 gallons mixed otherwise nor how long so much would take me to use!
     
  7. mopar_guy

    mopar_guy Member

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  8. Gerald C Koch

    Gerald C Koch Member

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    Store the concentrate in a cool but not cold location.