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  1. #21
    John Bragg's Avatar
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    I dilute HC-110 1:63 with water. I measure 8ml with a syringe and add water to make a total volume of 500ml. This does one film. Use once and discard... I prefer this high dilution for various reasons but the standard dilution is 1:31 or 16ml to make a total volume of 500ml. That will do 2 films in about half the time. At this ratio, a 1litre bottle will develop around 124 films. Hope this helps.

  2. #22
    Poohblah's Avatar
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    thank you, but how do i determine developing times using this dilution?

    and i assume you mean a 1 litre bottle of liquid developer concentrate like this: http://www.freestylephoto.biz/sc_prod.php?pid=479 ?

  3. #23
    John Bragg's Avatar
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    You can use the film manufacturers data to start or the massive dev chart, http://www.digitaltruth.com/devchart.html . This is what my bottle looks like
    http://www.firstcall-photographic.co...--1-litre/309/

  4. #24

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    The method John refers to calls for mixing a working solution for each batch of film, It can only be used once. But it's only one part of developer concentrate to 31 parts of water, in the case of Kodak HC-110 Dilution "B". In the case of your 20 ounce tank, that would be roughly .6 ounces of concentrate to 19.4 ounces of water (these measurements are much easier of you use mililiters instead).

    There are several different dilution ratios documented by Kodak, and a few others in common use, especially Jason's 1:49 dilution which is documented here in APUG and his website. (see http://www.jasonbrunner.com/hc110.html) and http://www.kodak.com/global/en/profe...ng/hc110.jhtml)

  5. #25
    Poohblah's Avatar
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    haha i read too fast now my last post makes me sound like an idiot.
    i'd rather mix a fresh batch every time than have some old stuff sit around for months and possibly get contaminated or precipitate.
    yes i agree millitres are much better but i'm using ounces for comparison's sake since that's what teach has us use for a 2-reel tank. i'll definitely mix everything in ml's.

    2 more questions:
    1. can i mix the chemicals with tap water (which, where i live, is very clean) or do i need distilled water?
    2. can i substitute a dilute distilled vinegar mix for stop bath?

  6. #26
    Dan Henderson's Avatar
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    If, as it sounds, you are using tanks and reels that others use, you are vulnerable to their darkroom hygiene (or lack thereof.) Along with keeping your own stash of developer (secured so that someone else cannot "borrow" some and perhaps mess it up for you,) I would recommend buying your own tanks and reels, so that you know that they are clean each time. Unless, of course, you have poor darkroom hygiene yourself, in which case you have no one to blame but you.


    web site: Dan Henderson, Photographer.com

    blog: https://danhendersonphotographer.wordpress.com/

    I am not anti-digital. I am pro-film.

  7. #27

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    Generally tap water is fine. Yes, you can use vinegar (white vinegar) at 1 part vinegar to 4 parts water.

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