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  1. #1

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    Ilfochrome Chemistry Expiration

    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. #2

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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. #3
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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. #4

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

  5. #5
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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
    "I always take a camera, That way I never have to say 'Gee, look at that - I wish I had a camera'" -Joe Clark, H.B.S.S.

  6. #6

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    It's the Developer - Part B is brown.

  7. #7

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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. #8

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

  9. #9

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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 sage; 04-24-2010 at 01:28 PM. Click to view previous post history.

  10. #10

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

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