Adox d76 reusing regime

[Alessandro Serrao]

I've bought a 1 liter pack of Adox d76 to try.
I know Ilford id-11 can be reused adding +10% time every other single roll after the first, up to the tenth roll.
Kodak d76 must be the same.
And Adox d76?
Can this regime be applied to it also?

 

[Alex Benjamin]

From the Adox website:

"The ADOX D-76 developer can be used exactly like the Kodak D-76, with the already-published D-76 times, dilutions and factors."

 

[Luxaeterna]

https://business.kodakmoments.com/sites/default/files/wysiwyg/pro/chemistry/j78.pdf

 

[Alessandro Serrao]

I've got another question: on the lable there's written that the capacity is 10-16 films per liter.
How is it achieved?

 

[Alex Benjamin]

I've got another question: on the lable there's written that the capacity is 10-16 films per liter.
How is it achieved?

By reusing the stock solution. As you mentioned, Ilford recommends adding 10% development time after each film for ID-11. You get up to 10 rolls with this.

Kodak's D-76 instructions aren't quite the same. Their recommendation is adding 15% per roll, but only after the first four rolls are processed. This brings you to a total 16 rolls per litre.

Important to note that the used developer always has to be mixed with the unused part after each film developed.


Kodak D-76 (info on page 5 of the data sheet posted above by Luxaeterna) :

Ilford ID-11 (page 8 of data sheet) :

 

[Alessandro Serrao]

By reusing the stock solution. As you mentioned, Ilford recommends adding 10% development time after each film for ID-11. You get up to 10 rolls with this.

Kodak's D-76 instructions aren't quite the same. Their recommendation is adding 15% per roll, but only after the first four rolls are processed. This brings you to a total 16 rolls per litre.

Important to note that the used developer always has to be mixed with the unused part after each film developed.


Kodak D-76 (info on page 5 of the data sheet posted above by Luxaeterna) :
View attachment 377294

Ilford ID-11 (page 8 of data sheet) :
View attachment 377295

16 is the maximum capacity per gallon, not per litre...

 

[Ian C]

The J78 document cites a quart/liter pack used at full strength with reuse gives a capacity of 4 rolls per liter.

Below the Storage Life and Capacity table we read

“If you use D-76 Developer diluted 1:1, dilute it just before you use it, and discard it after processing one batch of film. Don’t reuse or replenish this solution. To extend the useful capacity of D-76 Developer diluted 1:1—when processing two 36-exposure rolls in a 16-ounce tank—increase the recommended time by about 10 percent.”

16 fluid ounces = 473 ml. Thus, a liter of stock D76 diluted to 2 liters (1:1) could process 8 rolls of 35 mm film.

This works for short 35 mm reels. But the taller 120 reels require move volume to cover them.

 

[Don_ih]

Something else to consider when reusing stock developer is what kind of film you have been developing in it. You can probably reuse a litre of D76 adding 10%, like the Ilford suggestion, if you're developing FP4+ or some Foma film. But, if you're developing Tmax, the developing byproducts are much harsher - that film is hard on developer. You will not get the best results reusing the stock.

The unreliability of predicting the outcome makes reusing stock a bad idea. I'd rather use it up 1:1, one-shot.

I replenish D76. It works well for me.

 

[Alex Benjamin]

Kodak's data sheet is notoriously unclear, at least compared to Ilford's.

Couple of older threads on the subject:

Kodak d76 capacity

Hi everybody, please help me to understand a thing. The declared capacity for Kodak d76 is 10 rolls for 1 liter of solution. This means that 100ml is sufficient to develop 1 roll (assuming a 35mm 36exp roll). Why Kodak suggests to use a 250ml minimum concetrate volume to develop one roll?

www.photrio.com

D-76 increase per roll

If I am using a stock dilution of D-76 - one liter - should I increase the development time after each 2 rolls? Like 15 percent after each two rolls?

www.photrio.com

 

[Alex Benjamin]

on the lable there's written that the capacity is 10-16 films per liter.

Should add that the simplest way to settle this 10-16 roll mystery is to write to @ADOX Fotoimpex

 

[Alessandro Serrao]

Should add that the simplest way to settle this 10-16 roll mystery is to write to @ADOX Fotoimpex

I'm waiting for Adox reply.
I assume D76 to be exactly the same of Ilford id-11, so I will use Ilford suggestions.

 

[RalphLambrecht]

Something else to consider when reusing stock developer is what kind of film you have been developing in it. You can probably reuse a litre of D76 adding 10%, like the Ilford suggestion, if you're developing FP4+ or some Foma film. But, if you're developing Tmax, the developing byproducts are much harsher - that film is hard on developer. You will not get the best results reusing the stock.

The unreliability of predicting the outcome makes reusing stock a bad idea. I'd rather use it up 1:1, one-shot.

I replenish D76. It works well for me.

for me, quality is more important than quantity. I use stock with water 1+1 once and make it fresh when gone from bulk. cheaper than losing precious memories, but then I don't drink or smoke, and I don't have a car either.