Ilfochrome Chemistry Expiration

Discussion in 'Color: Film, Paper, and Chemistry' started by Renato Tonelli, Aug 12, 2009.

  1. Renato Tonelli

    Renato Tonelli Subscriber

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    I cannot find an expiration date on the Ilfochrome chemistry kits; do they have one printed somewhere?

    I have a few old kits (P30). I have had them for 2 years but I have no way of knowing how long they sat on the store shelf. I mixed from an unopened kit and the paper came out black/magenta, no image at all.
    I am stumped because I've done quite a bit of Ilfochrome printing in the past, but I must be doing something wrong.
    1 - The emulsion was facing up for the exposure
    2 - I exposed tests at 20, 30, 40, 60 seconds at f/8
    3- I inserted the paper (fresh box) emulsion down in the Durst Printo
    4 - The chemistry in the tanks is in the order of: Developer, Bleach, Fixer

    I suspect I am doing something wrong with the processor (first time using the Printo instead of the CAP40) but I went through and checked all the steps.

    I'm stumped. I have a new chemistry kit which I will try tomorrow; I sure hate to waste the older kits...
     
  2. Erik L

    Erik L Subscriber

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    Hi Renato,
    If you have a print drum that you can test the old chemicals with that might save you some hassles. Contact print a known 4x5 neg and stick it in a test drum and see if the old chems are any good. This would lead to minimal waste if the old chems are any good still. Good luck
    erik
     
  3. Photo Engineer

    Photo Engineer Subscriber

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    Renato;

    Take a tiny scrap of paper and in the light, run it through a small scale (cup scale) process. With total fog, the paper scrap should come out white. If not, then it is the chemistry.

    PE
     
  4. Renato Tonelli

    Renato Tonelli Subscriber

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    Thanks - I hope I'll have better luck tomorrow.
     
  5. Lopaka

    Lopaka Member

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    It's the developer that dies early. The bleach and fixer last a long time. To be more precise, it's part B of the developer that dies. If it's turning brown, it's dead. I find that substituting the same amount of Ilford Warmtone B&W developer for part B seems to work well, with a minimum of filtration changes.

    Bob
     
  6. Renato Tonelli

    Renato Tonelli Subscriber

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    It's the Developer - Part B is brown.
     
  7. sage

    sage Member

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    Don't mean to rehash an old thread, but Ive been trying to use some expired ilfochrome paper/chemistry. So far its either very blue where the blacks should be. Just wondering if thats the paper or the chemistry so I can see which to try getting a hold of.
     
  8. Renato Tonelli

    Renato Tonelli Subscriber

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    I suspect the paper but it's just a guess.
     
  9. sage

    sage Member

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    I tested a few things, but I'm still stumped. When i tried running a piece in the light, the developer does turn it fully black, and the bleach is whats turning it the blueish white tints. That's on a fully 'exposed'/fogged piece I ran in a tray. Another piece from a different box did something similar, but was a more darker shade of a blue-green.
     
    Last edited by a moderator: Apr 24, 2010
  10. Renato Tonelli

    Renato Tonelli Subscriber

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    It could be the combination of both the paper and the chemistry being expired.
     
  11. Marco Gilardetti

    Marco Gilardetti Member

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    Sirs,

    unfortunately Ilfochrome is not like black & white: when it is expired it is EXPIRED, full stop. Both paper and chemicals. There's no juggling with times / filtration / diluition that can help getting a decent picture out of it. It's only a waste of time. Dispose of the old stock in a safe way and buy a fresh stock.
     
  12. sage

    sage Member

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    Even if they are freshly mixed? The hard part is that I can't find anywhere that will actually ship the chemicals, just the paper.