HC 110 'H"

k.hendrik · Jan 3, 2016

Hello,
HC110 users; do you use H dilution as an one shot developer or use it for more then one film ?

greetings

Wayne · Jan 3, 2016

I use any and every film developer one shot. You only get one chance to use fresh developer

Kirks518 · Jan 3, 2016

I use all HC-110 as one shot, as well as any diluted solution of any developer. I re-use D-76 stock, which seems to last forever in my case.

bvy · Jan 3, 2016

In general, anything diluted from stock should not be reused.

Gerald C Koch · Jan 3, 2016

Kodak recommends a lower limit for the amount of concentrate used for each roll of film. The exact value escapes me now but it is around 6 to 7 ml per roll. Using less can result in poorly developed negatives even when using a freshly made working solution. In addition dilute solutions are more prone to aerial oxidation. Certainly this problem would be worse for a used solution. Any concentration less than dilution B should not be re-used.

In my own experience I have used 250 ml per roll of 35mm at a 1+49 dilution without any problems as a one-shot.

Jim Noel · Jan 3, 2016

Gerald C Koch said:
Kodak recommends a lower limit for the amount of concentrate used for each roll of film. The exact value escapes me now but it is around 6 to 7 ml per roll. Using less can result in poorly developed negatives even when using a freshly made working solution. In addition dilute solutions are more prone to aerial oxidation. Certainly this problem would be worse for a used solution. Any concentration less than dilution B should not be re-used.

In my own experience I have used 250 ml per roll of 35mm at a 1+49 dilution without any problems as a one-shot.

HC110 B should not be re-used either. Don't be so cheap. Give your negatives the finest treatment you can possibly give them. They deserve it and can not be replaced.

Andrea Guazzora · Jan 3, 2016

HC110 dilution H must be used one shot only, the same for any other dilutions. Best, A.G.

Kirks518 · Jan 3, 2016

HC-110 is so cheap to begin with, re-using doesn't really make sense.

K-G · Jan 3, 2016

This site can give you quite a lot of information about HC-110.

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

Karl-Gustaf

Laurent · Jan 3, 2016

When in a hurry and not enough stock, I did reuse some HC 110 "B" for development of two consecutive "batches".

Otherwise, it's one shot, and since I use "H" I would not consider reuse at any price.

frank · Jan 3, 2016

HC-110, 100:1, 50 minutes, semi-stand, one shot

k.hendrik · Jan 3, 2016

thanks all! On their bottles Kodak writes 'B' 4x 135 or 120, so I thought(being Dutch) double b=h>2 films is possible ? Fresh is best

ColColt · Jan 3, 2016

I don't use any chemistry a second time, especially developers. After stop baths stop and fixers fix they get dumped. I now, I know-some reuse fixer but, I don't. Important negatives deserve fresh chemistry.

Andrea Guazzora · Jan 3, 2016

Hi Laurent, when reused HC110 in B dil do you remember how much the time increment percentage you got ?

Luis-F-S · Jan 3, 2016

Jim Noel said:
HC110 B should not be re-used either. Don't be so cheap. Give your negatives the finest treatment you can possibly give them. They deserve it and can not be replaced.

+1 One shot ALWAYS regardless of the dilution!

Wayne · Jan 3, 2016

Other solutions can be used over and over without any risk, and there's no benefit at all in not doing so.

ColColt said:
I don't use any chemistry a second time, especially developers. After stop baths stop and fixers fix they get dumped. I now, I know-some reuse fixer but, I don't. Important negatives deserve fresh chemistry.

bvy · Jan 3, 2016

ColColt said:
I don't use any chemistry a second time, especially developers. After stop baths stop and fixers fix they get dumped. I now, I know-some reuse fixer but, I don't. Important negatives deserve fresh chemistry.

Important negatives deserve effective chemistry. Dumping fixer after one use is a huge waste. Fixer can be tested easily enough, and you can always refix your negatives if you discover it going weak.

Richard S. (rich815) · Jan 3, 2016

frank said:
HC-110, 100:1, 50 minutes, semi-stand, one shot

How often do you agitate, and what benefits do you get from this regime? I'm almost 80% HC-110 dilution H but am intrigued.

Richard S. (rich815) · Jan 3, 2016

bvy said:
Important negatives deserve effective chemistry. Dumping fixer after one use is a huge waste. Fixer can be tested easily enough, and you can always refix your negatives if you discover it going weak.

Agree. Fixer is not made for one-shot and does its job just fine for many rolls until exhausted. Most fixers say on the bottle about how much film or paper it can properly process.

Gerald C Koch · Jan 3, 2016

Jim Noel said:
HC110 B should not be re-used either. Don't be so cheap. Give your negatives the finest treatment you can possibly give them. They deserve it and can not be replaced.

The Covington Innovations site contains the following quote.

Be sure to use at least 6 mL of syrup per 135-36 or 120 roll of film,

Actually you can re-use for an additional roll and I base this on the these observations. First, Dil B contains more than the recommended 6 ml of concentrate. You can actually calculate the number of milligrams of developing agent required for an average roll of film. For 6 ml of HC-110 the concentrate contains much more than is required. Second, HC-110 was designed to be a close equal to D-76 which CAN be re-used. However, I do agree that for consistency one-shot use is preferred.

There are 3 ways to use most general purpose film developers.

1) As a one-shot.
2) With replenishment.
3) Without replenishment but with extending development time.

When Kodak discontinued the HC-110 replenisher they promised to publish as self replenishment method but never did. However at lease one such method has been given on the net.

For method 3 probably the most accurate (and also the most complicated) method was that given for Agfa Atomal. This method not only took into consideration the number of rolls processed per liter but also the time interval between use. At one time this was a very popular and recommended method of use with several commercial developers.

DWThomas · Jan 3, 2016

I use dilution H one-shot on tank developed roll film; I think it works out to about 20 cents a roll for developer. Last year on Worldwide Pinhole Photography Day I used dilution H with Fuji HR-T X-ray film. That was tray developing 8x10 with double sided emulsion. I added a modest amount of concentrate after every three sheets, a sort of replenished approach, and was happy with the results, though I admit to not having been all that scientific about it! (Hey, it's pinholery! )

Jeff Bradford · Jan 3, 2016

Exactly what Gerald C Koch just said.

HC-110 dilution H is 1:63, so that's 378mL of water plus 6mL of HC-110 to make 384mL of solution for ONE ROLL of film. If you wanted to make up a 3.84L batch, you could develop ten rolls of film in it , one at a time, or all at once.

Ultimately, HC-110 is so easy to use one-shot, there really isn't much reason to do otherwise.

NedL · Jan 3, 2016

I use HC-110 one-shot, and as already mentioned it is so easy that there is little reason to try other approaches.

For print developer, I've been using LPD replenished, and an advantage is that it is always ready and waiting whenever I want to make a print. It doesn't matter if it has been 2 days, 2 weeks or 2 months since the last time I used it. Not having to mix up anything before printing makes it easier and more likely that I'll make a print if I have a spare 1/2 hour or 45 minutes.

A secondary benefit is reduced waste. My printing now generates a pretty small amount of discharge. Using HC-110 replenished would have this benefit too. For me, the "alt processes" generates so much waste that the normal printing is just a small part, so this is not a strong motivation and I'll probably continue using HC-110 as a 1-shot. I would be intrigued though if there was a "self-replenishment" recipe and I'd be tempted to try it out.

k.hendrik · Jan 3, 2016

did i touch a nerve or what ? My 'H' delution and use depends on time; after a given 15' developing i don't use it again. But 2 or 3 x 6.5' the negs go in the same soup. Fix i use 5 or 6 x ( 3 or 4 roll batch) stop almost 20 ish ??when it doesn't smell anymore i replenish. I was just curious and learned a lot; thanks!

MattKing · Jan 3, 2016

I use HC-110 dil E in a replenishment regime.

The only time I would consider re-using a batch of Hc-110 dil H would be:

1) when I intend to perform several development sets one after the other (e.g. during the same day); and
2) when each development set consumed much less than the Kodak recommended 6 ml syrup.

An example would be a situation where I had a bunch of short 35mm bulk loaded rolls - 12 exp? - and a 650 ml two roll tank. Two rolls would use up the capacity of 4 ml of syrup, but the 650ml tank holds 650 ml of working strength dil H, meaning 10 ml of syrup. Given the difference (10 ml vs. 4 ml) I would feel comfortable developing two 2 roll batches in the same 640 ml of developer, one batch after another.

HC 110 'H"

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