E-6 Kodak Single-Use Chemestry

Discussion in 'Color: Film, Paper, and Chemistry' started by jrydberg, Sep 10, 2008.

  1. jrydberg

    jrydberg Member

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    I've been researching these chems a bit.

    According to the documentation I've found on kodak's website it needs 2750ml/m2 of the first and color developer, and 1650 ml/m2.

    So, the question is; how large is a single roll of 120 film? Anyone know exactly of hand?

    My guess is about 0.04 m2 (10 * 0.07 * 0.06).

    That means that you can get away with about 125ml of first and color developer per roll, which gives you 8 rolls per liter and 40 rolls from a 5l kit.

    Can someone confirm these numbers?
     
  2. Lopaka

    Lopaka Member

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    There are two considerations, since the 5L kit is chemistry designed for single use without replenishment. One is depending on the specific tank/reels you are using, you need to insure that enough chemistry is present to adequately cover your film for the intended process. Second, the developers have the lowest capacity of all the chemistry so that is the controlling factor. If you want to get into stretching the other chemicals you will need to get into buying individual chemicals and it becomes a bit more complex. I always considered a 120 roll to be approx equal to one 8 x 10 sheet and calculate accordingly. That makes the developer cap approx 1 roll to 140 ml. In my Jobo tanks, I use 200 ml per roll and have no issues. Perhaps I could get away with less, but I don't process enough E-6 anymore for that to be an issue - the chemistry would get too old anyway.

    Bob
     
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  3. jrydberg

    jrydberg Member

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    I'm using a Jobo ATL-1500 system.
     
  4. snallan

    snallan Member

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    A roll of 120 is roughly equivalent to a roll of 135-36, or an 8x10 sheet of film (though a bit shorter, I think around 64 - 65 square inches). In the instructions that come with the kit, Kodak recommends 250ml per square ft, which they translate to 260 ml for two 135-36 rolls. So your calculations are in the right area.

    As Lopaka says, the minimum volume you can get away with depends upon the required minimum volume of the processing tank you are using.

    The 1520 tanks require a minimum volume of 240ml. So it would be most economical to use 250ml of solutions, and process two 120 rollas at a time.
     
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  5. jrydberg

    jrydberg Member

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    I'll try two rolls with 250ml of solution. Thanks for your time.