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self-brewhc110
is anyoneaware of a self-brew formula for hc110?
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I don't know of any. Presumably one could be formulated that approximated or matched its working properties, but home-brewing the formula itself is likely difficult. It apparently contains several iminodiethanol compounds ("ammonia-based forms of sulfite and bromide" according to Anchell/Troop), and Polyvinylpyrrolidone. Not sure how easy these are to obtain. Gerald Kock, PE, Ian Grant could probably provide more info/guidance.
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Sorry just not practical. HC-110 is a very unusual developer in that it contains no water. It contains a mixture of amines and glycols which act as the solvents. Some of these chamicals were manufactured by Kodak just for this developer. Even if you were somehow able to get the necessary chemcals you would still need some specialized equipment to make it.
Last edited by Gerald C Koch; 01-04-2013 at 08:57 AM. Click to view previous post history.
A rock pile ceases to be a rock pile the moment a single man contemplates it, bearing within him the image of a cathedral.
~Antoine de Saint-Exupery
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 Originally Posted by RalphLambrecht
is anyoneaware of a self-brew formula for hc110?
There is a formula in the Film Developing Cookbook by Steve Anchell & Bill Troop.
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No there isn't. They present the patent formula that is or approximates HC-110. But that formula contains the amines and glycols referred to above. A home-brew would have to be formulated to approximate HC-110's working properties using readily available compounds. Likely not worth the effort anyway since HC-110 is a long lasting general purpose formula.
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yes,sorry, just found it. i have trouble with reding book indexes,but many thanks anyway.
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Originally Posted by Michael R 1974
Likely not worth the effort anyway since HC-110 is a long lasting general purpose formula.
I don't clearly understand, and it would be interesting to learn, what some of the "weird" chemicals in the HC-110 patent formula are there for. It seems to me, as a rank amateur, that one should be able to *approximate* the behavior of HC-110 by using the same levels of developing agents in an organic solvent (glycol, TEA, etc.---I seem to remember that HC-110 itself uses some form of glycol), adjusting the pH to match, and introducing a similar antifoggant (I think that's the PVP in the original formula, but there are plenty of other antifoggants that could be tried). That doesn't sound too formidable, and I wonder how much it would differ in practice from the real thing.
-NT
Nathan Tenny
San Diego, CA, USA
Although the moon is smaller than the earth, they are about the same distance apart.
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I think Michael's point is that HC-110 is inexpensive, readily available and produces results very similar to D-76...so, why bother? (eg if you wanna home brew something mix up some D-76 and have at it).
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That's pretty much what I was getting at. For those who just enjoy the work involved in re-creating a given formula, and enjoy mixing their own chemicals, I have no argument against it. Go for it.
What I meant in the specific case of HC-110 is that some of the other reasons normally given for home brewing don't really apply: Sometimes you can save money by home mixing a clone, sometimes its a pain to mix too much (5 liters of XTOL for example), sometimes you want to recreate the particular properties of a developer no longer commercially available, and sometimes you want to create something with a longer shelf life. However in the case of HC-110, it's cheap, lasts a hell of a long time, and there's nothing very special about it. So it seems like it would be a monumental effort to make a clone without much reason behind it.
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