HC-110 direct dilution from syrup..where to find?

Discussion in 'B&W: Film, Paper, Chemistry' started by PHOTOTONE, Feb 17, 2007.

  1. PHOTOTONE

    PHOTOTONE Member

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    I don't want to mix up the whole bottle of syrup. Where can I find the formulas for mixing up working developer directly from the syrup for the various dilutions?
     
  2. PhotoJim

    PhotoJim Member

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    You can calculate them yourself fairly easily.

    I don't use HC-110, so these are just made up examples...

    If the stock solution is diluted 1:3 and you dilute the stock solution 1:15 to make your working solution:

    1:3 means it's 1/4 water and 3/4 concentrate
    1:15 means it's 1/16 water and 15/16 stock solution

    1/4 * 1/16 = 1/64

    This would mean 1 part concentrate and 63 parts water.
     
  3. Eric Rose

    Eric Rose Subscriber

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    The way I do it, and I always mix from the syrup, is very simple. If I want 1:32 (dil B) and want 1000ml as a final volume, I divide 1000 by 33 (32 + 1, easy eh). That gives you 30.3 ml of goo and then add water to bring it up to 1000 ml (969.7 ml).

    For a 1:4 mixture:

    Say you want 750ml of final solution. 4 + 1 = 5
    750/5 = 150ml
    add water to bring the total up to 750ml.
     
  4. Muihlinn

    Muihlinn Member

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  5. eddym

    eddym Member

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    Actually, dilution B is 1:31. That is, 1 ounce concentrate to 31 ounces of water to make 32 ounces of working strength. So in metric terms, that should be 31.25 ml of concentrate plus water to make 1000 ml.
     
  6. George Collier

    George Collier Member

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    One other thing I do when making high dilutions like this, or Rodinal. I use a graduated cylinder that holds only about 50cc (ml), more accurate than larger ones. I use 1:45 for HC110 and tri-x, gives me a bit more control, about 9min at 72 degrees. For 1000cc's this comes to 22cc's of HC-110 (1000/45). I fill the graduate to 20cc with water first, then add the syrup to come to a total of 42cc's. With the water in the graduate first, the syrup comes out more easily. I also keep a couple hundred cc's in another graduate, part of the 1000, to fill and dump the small graduate a couple of times to be sure I get all the syrup.
     
  7. John Bragg

    John Bragg Member

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    Ever thought about using a syringe ? It takes all the hard work out of it !!!

    Regards, John.
     
  8. Tom Duffy

    Tom Duffy Member

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    one oz of syrup to 31 oz of water for dil B. one half oz to 31oz of water to compensate for high contrast scenes. HC110 is an excellent compensating developer when used with TXP-320. I've gone down to one quarter oz to 31 oz of water for very high contrast situations, or, I used to before I standardized on Pyrocat HD for TXP.
     
  9. Mark_S

    Mark_S Member

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    I keep a print out of http://www.covingtoninnovations.com/hc110/ in the darkroom. I live in a rural area, so some things are hard to find, but the local feed store has syringes - I use a 35cc syringe which costs me under $1.00.
     
  10. Konical

    Konical Subscriber

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    Good Evening, Phototone,

    I keep a dilution chart for HC-110 on a darkroom cabinet door. I don't recall if I got all or part of it from the aforementioned covingtoninnoviations site, but, except for A and B, I may have. A--1:15; B--1:31; C--1:19; D--1:39; E--1:47; F--1:79; G--1:119; and H--1:63.

    Konical
     
  11. reub2000

    reub2000 Member

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    I mix 250ml of water with 8ml of the syrup. Not exact, but close enough for my purposes.
     
  12. eddie gunks

    eddie gunks Member

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  13. David Brown

    David Brown Subscriber

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  14. Eric Rose

    Eric Rose Subscriber

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    Oh my God! No wonder all my negs turn out blank!! LOL. Oops