Prescysol shelf life

Discussion in 'B&W: Film, Paper, Chemistry' started by RobertP, Dec 19, 2008.

  1. RobertP

    RobertP Subscriber

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    I was going through the chemical cabinet and found some Prescysol developer from formulary. This is two bottles of concentrate one small bottle of solution A and a larger bottle of solution B. These are unopened but probably 2 years old. Does anyone know the shelf life of these concentrates? Thanks
     
  2. Stoo Batchelor

    Stoo Batchelor Member

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    If open, Prescysol has a shelf life of at least six months, but in my experience it will last a lot longer, up to a year if an anti-oxidation spray has been used. As your bottles have remained unopened, I am sure it will be o,k. All you can do is open the bottles, and if the 'A' solution is a light straw colour, it should be fine, if it has gone brown, dump it. The 'B' solution will last indefinitely, but a 10 second blip in the microwave may be needed.

    As always, don't commit a valuable film to it until tested.

    Best of luck

    Stoo
     
    Last edited by a moderator: Dec 19, 2008
  3. Marco S.

    Marco S. Member

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    In addition to what Stoo said, I decant the "A" solution into a glass amber round with a shot of butane gas.

    Regards,

    Marco
     
  4. Adrian Twiss

    Adrian Twiss Member

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    I had an unopened package that was about 18 months old. When I opened bottle A it was treacle colored. It went straight down the sink.