Proper handling HIE

Discussion in 'Alternative Processes' started by GoGo, Apr 15, 2007.

  1. GoGo

    GoGo Member

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    Is it OK to store HIE in my freezer should I taking extra precautions?

    What is considered the ideal storage condition for IR film (short term, less than 1 year)?
     
  2. Ole

    Ole Moderator Staff Member Moderator

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    A freezer is a very good place for any film. No extra precautions are necessary beyond what goes for every film (IMO, nothing at all).

    I keep all my film in the freezer, and take it out as I use it. Whether it's one week or one decade, the freezer is the place to keep it.
     
  3. AgX

    AgX Member

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    latent image drift in freezer

    GoGo,

    the only information on freezing films accompanied with figures I know of is this information from Agfa on a current B&W IR of their make concerning latent image stability. If you should be able to read those figures you will understand that you are on the right sight when employing freezing (concluding on unexposed film):

    Time lag effects on the latent image

    Speed drift in log exp
    1 day 1 week 2 weeks 3 weeks 4 weeks 5 weeks
    Shelf -0.12 -0.16 -0.16 -0.16 -0.16 -0.16
    Fridge -0.08 -0.09 -0.10 -0.12 -0.13 -0.13
    Freezer -0.07 -0.07 -0.07 -0.07 -0.08 -0.08

    Average gradient drift based on a a gradient of 0.9
    1 day 1 week 2 weeks 3 weeks 4 weeks 5 weeks
    Shelf -0.02 0 0.04 0.04 0.04 0.04
    Fridge -0.01 0 0.02 0.02 0.03 0.03
    Freezer -0.03 -0.03 -0.01 0 0.01 0.01

    The expiry date is based on storage in the original packing and at an ambient temperature of 8°C. Colder storage expands the life time of the product. Ageing of the film is very limited when the film is stored in the freezer.


    (Sorry for the bad readibility. But uploading spoiled my formating; sort it out yourself...)