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  1. #1
    djkloss's Avatar
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    HC110 from concentrate

    I'm looking for a recipe for using HC110 at high dilutions from concentrate for roll film (plusX, triX) or 35mm. I don't develop enough to use up the working solution which only lasts 6 months. I've used Tmax developer which is easy, but wanted to try HC110 for its (supposed) compensating effects. I use Rodinal for sheet film, and am looking for similar results with HC110 for roll film. With sheet film I stand develop. That doesn't seem to work with roll film or 35mm. Has anyone tried HC110 1:50 to 1:100 from concentrate or something close?

    Any suggestions would be greatly appreciated.

  2. #2
    glbeas's Avatar
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    It's easy enough to do the math to find the dilution factors for HC110. Kodak lists the factors to make a working dilution from stock, merely multiply that by the factor it takes to mix the stock from the concentrate, which if I remember right is 1 part concentrate to 3 parts water though you better check me on that. I think there may be previous threads on the subject so use the search function and see what comes up.
    Gary Beasley

  3. #3

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    Check out:http://www.covingtoninnovations.com/hc110/

    You won't find many similarities between HC-110 and Rodinal. Yes, they are both liquid and you can whatever dilution you wish, but HC-110 is a general purpose, solvent developer, while Rodinal is not. They are pretty much opposites.

  4. #4
    BradS's Avatar
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    Long time APUG subscriber Bob Fowler posted a comprehensive HC-110 dilution chart sometime ago. Check the link in the first post in this thread...or, go straight to the HC-110 dilution page on Bob's site.

  5. #5
    BradS's Avatar
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    Oh, as far as results....HC-110 is a wonderful developer. I use dilution d (1:40) all the time. However, to my eye the results are nothing like what you get from Rodinal.

  6. #6
    Lee L's Avatar
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    Ansel Adams has notes on using HC-110 for compensation effects at dilution G (1+119 from concentrate) with reduced agitation in his chapter on value control in processing in The Negative. He used Tri-X Professional roll film in his example. He used the same techniques to bring Tech Pan down to N-4 relative to it's naturally high gamma.

    Lee
    Last edited by Lee L; 02-03-2007 at 12:52 PM. Click to view previous post history.

  7. #7
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    I have used with good results (with 120 film, Tri-X and Plus-X) HC-110 diluted 1:119 from concentrate. I believe AA diluted stock solution 1:31 to achieve a compensating effect. The key to the compesating effect is the appropriate reduction in agitation from the normal interval, as elluded to earlier I believe.

    Chuck

  8. #8
    djkloss's Avatar
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    Thank you all for your tips & suggestions. I look forward to experimenting.

    cheers.....

    Dorothy

  9. #9
    rmolson's Avatar
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    HC-110

    I have used HC-110 at 1:50 dilution with 35mm Tmax 400 for years. It was my standard. With a cold light enlarger my typical time was 7 minutes at 68 degrees

  10. #10

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    The covington innovations dude has it *down* for how to use HC-110. I use a syringe and a bottle-top-with-a-hole-in-it and keep it in concentrate form and it works great.

    I need to screw around more with dillutions.

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