Lou's method of developing with Kodak HC-110 Developer:

Here's the method I've been using for developing Tri-X and Verichrome Pan with Kodak HC-110. This syrupy concentrate is very convenient to use if you are developing at home since no mixing of powders is involved. If diluted as follows, one quart of it can develop over 150 rolls of film. The concentrate keeps well if stored in its original bottle.

(Items needed: HC-110 developer and a small (20-25ml) graduate in addition to your regular beakers.)

Dilute the HC-110 concentrate as follows: Measure carefully 22 ml in the small graduate and pour into a beaker. Rinse out the graduate numerous times with water, adding the water to the beaker to make sure that all of the syrup winds up in it and top the solution off to 1 liter (32 ounces). To make 500 ml of developer (16 ounces) use only 11 ml of the HC-110 concentrate. Developer temperature should be at 75 degrees.

Development times: Verichrome Pan or other ISO 125 films: 9 minutes*

Tri-X and t-Max films: 11 minutes*

*use these as starting times only and make adjustments based upon your initial results.

Agitation: continuous for first 30 seconds and 5 seconds for every 30 seconds after that. Fix, hypo-clear and wash normally. The above times are starting points but should give you a decently developed roll of film. Add time to increase contrast; subtract time to decrease contrast.

Using HC-110 to tray-develop 4"x5" sheet film:

Dilute using the same method as above, but use 13 ml of HC-110 concentrate to 750 ml water. Adjust the temperature to 72F:

ISO 125 films: 10 minutes*

ISO 400 films: 12 minutes*

*use these as starting times only and make adjustments based upon your initial results.

Note: prior to the developer, the sheets should be soaked in a pre-wet also adjusted to 72F. Sheets should be shuffled slowly and continuously during development, moving the sheet at the bottom of the stack to the top and so on. These developing times can also be used for developing 4"x5" film in a tank.