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Thread: Fotoflo in developer?

  1. #1

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    Fotoflo in developer?

    "Developing - The Negative Technique ; a Focal Manual of Photo-Technique" by Jacobson (18th ed. 1980) suggests this for more even development. Anyone tried it, or is the wetting agent already included in most developers?

  2. #2

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    Re: Fotoflo in developer?

    I do not remember where I read it but, some piece of Kodak Technical literature specifically says NOT to add photoflo to the developer. I think the admonition may have been specific to HC-110 but, like I said, I do not remember the specifics.

    in any case, do not fix what is not broken.

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    Re: Fotoflo in developer?

    are you having problems with unevenness, then just AGITATE more

    putting foreign chemicals in the developer CAN'T help.

    You even may get all sorts of foaming issues--developer foams by itself and photoflo always way overfoams on me with any type of motion.

    I cant' prove it WON'T do any harm, and I can't prove it won't do any good, but I've never needed it ever.

    I'd look to changing technique and using what you have rather than going for the magic pill....

    don't treat the SYMPTOM....

    Now, that will about force you to do the opposite, since it's ME talking....

  4. #4
    Kirk Gittings's Avatar
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    Re: Fotoflo in developer?

    are you having problems with unevenness, then just AGITATE more
    unless over-agitation is the source of your unevenness of course.......

    I have always used PF in my developers when shuffle processing in trays-now for 33 years. I have never seen any problems with it.
    Thanks,
    Kirk

    at age 70:
    "The woods are lovely, dark and deep,
    But I have promises to keep,
    And miles to go before I sleep,
    And miles to go before I sleep"

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    Re: Fotoflo in developer?

    and there it is....as expected

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    Kirk Gittings's Avatar
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    Re: Fotoflo in developer?

    I might ad that I use it to make the film more slippery. IME it makes the film easier to handle and less likely to stick together or scratch. I also use BTZS tubes and a slosher tray on occasion where I don't use PF and see no difference in the results.
    Thanks,
    Kirk

    at age 70:
    "The woods are lovely, dark and deep,
    But I have promises to keep,
    And miles to go before I sleep,
    And miles to go before I sleep"

  7. #7
    IanG's Avatar
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    Re: Fotoflo in developer?

    It shouldn't be added to modern film developers, it can be more usefull with print developers.

    You run the risk of foaming with films, particularly in inversion dev tanks, many commercial developers contain a very small quantity of long chain wetting agents, these don't foam. I need to add two drops to my Pyrocat HD to prevent air bells when I'm in Turkey where the local water lis excessively hard.

    In addition to this most emulsions have a wetting agent added to help coating, when doing a long printing session it's noticeable how this builds up in the developer.

    Ian

  8. #8

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    Re: Fotoflo in developer?

    I don't have a problem with unevenness myself but the idea of making the negs more slippery for tray processing is intriguing. Yes it may foam up in a tank but the film is supposed to be below the waterline anyway but maybe bubbles may still attach to the film? Anyway, nice to read old books for these sorts of things

  9. #9
    Drew Wiley
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    Re: Fotoflo in developer?

    I have sometimes used a tad of Photoflo in the presoak water for tray dev, but never in the dev itself. There is always the possibility this might alter ideal dev times a bit, just as the length itself of presoak will. For some developers, a tiny amt of 1% EDTA will help eveness.

  10. #10
    IanG's Avatar
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    Re: Fotoflo in developer?

    Quote Originally Posted by cyrus View Post
    I don't have a problem with unevenness myself but the idea of making the negs more slippery for tray processing is intriguing. Yes it may foam up in a tank but the film is supposed to be below the waterline anyway but maybe bubbles may still attach to the film? Anyway, nice to read old books for these sorts of things
    The foam gets lodged around the edges of the spiral/holders and that is often below the liquid level.

    I did some testing about 3 years ago, making visual inspections 5x4 in a Jobo 2000 (pre Rotary inversion tank), 120 in a Paterson tank. What I found was quite surprising because air bubbles formed at every stage regardless of a pre soak, no amount of tapping or agitation would remove them all. A very minute amount of wetting agent would but to much caused foaming and thats even harder to control once it start.

    Ian

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