Shelf life of dyes in methanol

Discussion in 'Silver Gelatin Based Emulsion Making & Coating' started by wildbillbugman, Apr 3, 2008.

  1. wildbillbugman

    wildbillbugman Member

    Messages:
    819
    Joined:
    Apr 18, 2005
    Location:
    San Bernardi
    Shooter:
    8x10 Format
    Hi,
    Anyone care to venture a guess as to how long a solution of dye in methanol can be kept in the dark?
    Thanks,
    Bill
     
  2. Kirk Keyes

    Kirk Keyes Member

    Messages:
    3,267
    Joined:
    Jun 17, 2004
    Location:
    Portland, OR
    Shooter:
    4x5 Format
    Bill - I'm sure it depends on your dyes.

    Anyway, I'd try using glass bottles with teflon lined caps to give maximum life.
     
  3. Photo Engineer

    Photo Engineer Subscriber

    Messages:
    25,936
    Joined:
    Apr 19, 2005
    Location:
    Rochester, NY
    Shooter:
    Multi Format
    Bill;

    It depends on dye and bottle as well as temperature. The colder you keep it the longer it keeps. The dye should also be protected from light.

    PE