How Long C-41 Developer Can Last (Opened Concentrate)

Discussion in 'Color: Film, Paper, and Chemistry' started by RedSun, May 7, 2014.

  1. RedSun

    RedSun Member

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    Say kodak Flexicolor liquid concentrate, opened, then stored in cool basement. Will that last more than a year? I know the part C can go bad rather quickly. Just wonder how quick that is.
     
  2. wildbill

    wildbill Member

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    yes
     
  3. tnabbott

    tnabbott Member

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    How can one tell when the part C goes bad? I have some and its blue, does that mean it's gone bad?
     
  4. lhalcong

    lhalcong Member

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    if you just opened them for no reason and then closed them, you let air(oxygen) in. In that scenario they will go bad rather quickly. I have a bottle of Part A, B, and C in my hands right now but Part C is a small dark container so I cannot tell the color of the liquid, but I will prepare my batch tonight. If you haven't gotten an answer by then, I will post my follow up. I don't think it would be blue at all though... These are rather clear substances.
     
  5. polyglot

    polyglot Member

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    You must store it under a non-reactive gas if you want it to last. I use the Rollei and fill the bottles with butane after each use, it lasts a year no problems.

    If it's gone blue, it's bad. Ditch it.
     
  6. tnabbott

    tnabbott Member

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    It's gone blue, so i'll ditch it. Where do you get butane from?
     
  7. Dr Croubie

    Dr Croubie Member

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    Lighters, and refills.

    Do it outside and don't smoke.
     
  8. tnabbott

    tnabbott Member

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    Okay, so before I chuck this: is there anything I can do to salvage part c?
     
  9. polyglot

    polyglot Member

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    Nope. Sorry. If it's the Rollei, at least you can buy that part separately.
     
  10. Oxleyroad

    Oxleyroad Subscriber

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    Oh man. Where is your sense of adventure... :wink:
     
  11. Dr Croubie

    Dr Croubie Member

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    It probably landed in the same place as my roof. If you see it let me know.
     
  12. polyglot

    polyglot Member

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    Well, there's a bit over here, and the legs over there and I think you can find most of its hair behind the shed.
     
  13. anikin

    anikin Subscriber

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    I would at least try to mix a small amount and test it. In my experience, when part C goes bad, it goes real black like tar. I have not seen it going blue. But I use Kodak's chemistry and not Rollei.

    Eugene.
     
  14. tnabbott

    tnabbott Member

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    This is encouraging, it's kodak chemistry. I did mix one up and tried it. The film developed but I cannot tell how good it is because I just started optical wet printing too. Basically, I have no baseline from which to judge results.
     
  15. mklw1954

    mklw1954 Member

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    If you can't scan some of the negatives, check the orange base against some negatives you know were well developed, to see if the density is there. Also, you can generally tell if there's decent contrast in the negatives just by looking at them. As far as color balance, if you know some of the colors in your shots, you can check that the complementary color is present in the negative, e.g., green in the negative for red in the image and vice versa, blue in the negative for yellow in the image and vive versa.