D-76?

[3js]

Hi all,

A simple question, how many times you can reuse one litre stock D-76 without replenisher? I´m using 3 films per session.

Thanks!

 

[wontonny]

I dump it after each use.

 

[fidget]

I use ID11 (just about the same). At 1:1 I regularly put 3 films through one single film batch. I save film so that I can do at least 2 in each mix. Then it is discarded.
So, for example, 300ml will do one 35mm film, I reuse that mix for another film and then a further film (all in the same session, I don't believe that it would keep well).
More often I will put two 120 films on one spool, dev them then reuse the mix for a further 135 or 120 film.

 

[venchka]

Go to the Kodak web site and read the data for D-76. I'm sure they will have a replenishment schedule there. I always use D-76 mixed 1:1 with water for one shot use. I like the results better.

Here is the link:

Kodak D-76 Data

You will notice that the replenishment is different for different films.

 

[3js]

Go to the Kodak web site and read the data for D-76. I'm sure they will have a replenishment schedule there. I always use D-76 mixed 1:1 with water for one shot use. I like the results better.

Here is the link:

Kodak D-76 Data

You will notice that the replenishment is different for different films.

Yes, I have been there allready, but I really like to know how to reuse D-76. The techPub don´t say how... I know it can be reused by adding developing time, but how much? I´planning to use 3 reels per litre, agitation continious for first minute, then 5 seconds every 30 seconds. Do I add 1 minute per session? Can I use it 4 times? Or 3? Film will be Trix 🙂

 

[nikon_sam]

I've done what you're doing...develop two 35mm rolls in a tank and then another two rolls right after that...I might add 30 seconds to 1 minute to the second set of rolls...
I have done a third roll but don't do it any more...
I would dump the D-76 1:1 solution after the second set...You got your monies worth at that point...
I've never used a replenisher so can't help with that...

 

[venchka]

It doesn't get any plainer

It doesn't get any plainer

REPLENISHMENT
Use KODAK PROFESSIONAL D-76R Replenisher to increase the capacity of D-76 Developer (full strength) and maintain process consistency without increasing the development time.

If your processing load includes any or all KODAK PROFESSIONAL T-MAX Films, use the "Modified Replenisher" mixing instructions and replenishment rate that follow. T-MAX Films are more sensitive to the developer; the modified replenisher controls the speed loss and increase in contrast that occurs with seasoning and the original replenisher.

If you process only films other than T-MAX Films, you can replenish using the "Original Replenisher" procedure.

Using a Modified Replenisher

Prepare the modified replenisher by mixing D-76 Developer and D-76R Replenisher according to the instructions on the packages. Then combine 5 parts of D-76 Developer with 1 part of D-76R Replenisher, and stir until the solution is completely mixed. To determine the amount of modified replenisher solution to mix, estimate the amount you will need for 3 to 4 weeks. Then select packaged developer and replenisher to mix this amount of replenisher solution. For example, if you determine that you need 45.4 litres (12 gallons) of modified replenisher solution, prepare a 38-litre (10-gallon) package of D-76 Developer and two 3.8-litre (1-gallon) packages of D-76R Replenisher, and then combine these solutions. For consistent results, don't store the mixed modified replenisher solution for longer than 4 weeks. With low utilization (when it takes longer than 1 month to turn over the tank solution), discard the developer after 1 month.

The starting-point modified replenishment rate is 70 mL (2 1/2 fluidounces) for each 135-36 or 120 roll or 8 x 10-inch sheet (or equivalent) processed. Monitor the developer activity with KODAK Black-and-White Film Process Control Strips and adjust the starting-point rate, if necessary, to keep the contrast of the film within the required range.

Discard the developer after processing 9600 square inches of film 3.8 litres (per gallon). Capacities in numbers of rolls or sheets for various film sizes follow.

Using the Original Replenisher

Add 22.2 to 29.6 mL (3/4 to 1 fluidounce) of replenisher (mixed according to the instructions on the package) for each 135-36 or 120 roll or 8 x 10-inch sheet (or equivalent) processed. (This rate is usually sufficient to compensate for normal carry-out of developer from the tank, as well as chemical depletion. However, if much more of the solution is lost in processing than is replaced by replenishment, make up the loss by adding fresh working-strength developer.) Stir or recirculate the solution thoroughly after each addition of replenisher. Monitor the developer activity with KODAK Black-and-White Film Process Control Strips and adjust the starting-point rate, if necessary, to keep the contrast of the film within the required range.

Discard the developer after processing 9600 square inches of film 3.8 litres (per gallon). Capacities in numbers of rolls or sheets for various film sizes follow.

Capacity for Replenished D-76 Developer
Film Size Number of Rolls or Sheets per Gallon of Developer
with Replenishment
120 120
220 60
135-24 160
135-36 120
8 x 10-inch sheets 120
4 x 5-inch sheets 480

OK, the original question:

A simple question, how many times you can reuse one litre stock D-76 without replenisher? I´m using 3 films per session.

The answer, according to Kodak, NONE. Replenish after each use. The whole idea is to replace developer used up during processing. Every roll of film will use up some developer. Some is chemically used up. Some is left behind on the film and in the tank. So, add replenisher and bring the original 1 liter back up to 1 liter each time you process film.

That's why I prefer to dilute D-76, and all of my developers, and toss them out after use.

I hope this helps.