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Thread: Tetenal Colortec C-41 Developing Kit

  1. #1

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    Tetenal Colortec C-41 Developing Kit

    I would like to start develop my color negative films, never done this before.

    Did my research with Tetenal because my store sells this. There is one thing that's not clear for me: how long can I reuse the solution, the values I have found are for 135 rolls.

    So I have a Paterson sp-445 tank = 750ml
    For the first four rolls, the development time is 8 minutes. This increases with one minute with the next four rolls ....
    Could I safely say that 4 rolls = 4 sheets ?

    At this time I have at least 2 roll 120mm and 16 sheet film

    I know you can keep the solution for several weeks if preserved correctly, but with each development the strength will be less hense the longer development time.
    But when do you need it to throw away, not when you see your negatives are bad ...

    So still a bit confused.

  2. #2
    Corran's Avatar
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    Re: Tetenal Colortec C-41 Developing Kit

    One roll of 35mm = 4 sheets of 4x5 (or 1 sheet of 8x10).

    Are you sure the development time is 8 minutes? C-41 is usually 3:15 or 3:30 depending on instructions/kit.

    I use mine past its lifespan just fine. I add time as I go along by feel / experience until I think it's exhausted beyond use. Yes, it's bit me in the ass once or twice. Such is life - if I have a super-important shot I use fresh.

    It's also possible to dilute and use one-shot with some testing. I used to do that when I first started as I would only shoot/develop one or two sheets of C-41 very occasionally.
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  3. #3

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    Re: Tetenal Colortec C-41 Developing Kit

    Corran, the time is correct for 86 3:30 is for 100

  4. #4
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    Re: Tetenal Colortec C-41 Developing Kit

    Ah I see, I always develop at 100 degrees.
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  5. #5

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    Re: Tetenal Colortec C-41 Developing Kit

    Tetenal spells out capacities in their instructions. They have extended use instructions if you are willing to live with less than perfect results. For me I wouldn't try to develop more than 8 rolls per liter.
    This is why I buy the Kodak Flexicolor chemistry. It's so cheap for the Developer something like 15 dollars for 5 L of replenisher which yields something like 6 liters of "tank solution " ready to use developer. If you are using small tanks you can even replenish (I use 1 shot on a Jobo)

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    Re: Tetenal Colortec C-41 Developing Kit

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    This is the result of my first c-41 development.
    I had to do some color adaptions what I normally never do when the negative come back from the lab, also on the right upper corner some blue...
    At the end, I’m happy this will save some $$

  7. #7
    Corran's Avatar
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    Re: Tetenal Colortec C-41 Developing Kit

    You may just need to BLIX it a bit more. That's usually the problem if you have some discoloration like that. You can put the film in the BLIX for much longer than the instructions state with no issues.
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  8. #8

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    Re: Tetenal Colortec C-41 Developing Kit

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    My second batch, develop time 9 min and Blix 9:30 instead of 8:0min.
    The blue cast was easy to remove in Lightroom but still.
    Anyone some advice ?

  9. #9
    Corran's Avatar
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    Re: Tetenal Colortec C-41 Developing Kit

    I've noticed if I try to "push" color film in home C-41 the blue "channel" is much too strong.

    I think you are overdeveloping the film considering your scan. Either that or your cold development is causing it.
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  10. #10

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    Re: Tetenal Colortec C-41 Developing Kit

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    Corran, thank you for all feedback. Today I have noticed that the Blix was to cold.
    As I use my kitchen sink for heating, I took out the Blix at the same time as the developer. So perhaps this could be it.

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