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

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

1. ### PHOTOTONEMember

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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. ### PhotoJimMember

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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 RoseSubscriber

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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.

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5. ### eddymMember

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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 CollierMember

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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 BraggMember

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

Regards, John.

8. ### Tom DuffyMember

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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_SMember

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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. ### KonicalSubscriber

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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. ### reub2000Member

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

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14. ### Eric RoseSubscriber

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