Re use Ilford ID-11

gordinir8 · Nov 11, 2017

Since a month or so i have start to shoot 120mm b&w film. I have successfully developed my firs roll using 1+1 ilford ID11. And since this is my first ever experiments i will keep it that way but in the future i would like to drop the cost a little so the
question is if i can reuse this 1+1 mix to develop a second film or i just have to use it undiluted one shot as per ilford instructions, then put it back on the bottle with the new unused chemical and next time 10% more time and this for 10 films.
Of course this applies to 1 liter of chemical and only for 35mm film that you are using less chemical than the 120 film (375cc vs 590cc).
Also how about fixer, is it ok if i use it say four times and then discard it?
Photo taken with Brownie 2F
Thomas

Billy Axeman · Nov 11, 2017

I recently started an experiment to reuse ID-11 without replenishment, that is, as stock solution. After the first roll the development time is extended with 10%, third roll 20% etc. I have only done 5 rolls until now so I can't say how it will react towards roll 10 (the capacity is 10 rolls 120 or 135). Ilford is saying in their ID-11 datasheet it is OK to work this way.

Ilford doesn't recommend reusing diluted developers 1+1 or 1+3.
You can download the datasheet here:
https://www.ilfordphoto.com/id-11-product

darkroommike · Nov 11, 2017

Diluted developers have a finite capacity since they only have a give amount of developer agents. You might get away with it with a 1+1 dilution but why risk it.

R.Gould · Nov 11, 2017

Uxe id11/d76 at stock and you can get 10 rolls out of a litre, just pour the used developer back into the remaining developer and add 10/20/30/40/50/60/70/80/90 for the tenth film, followss ilfords own suggestion and it works fine, it is the cheapest way to use the developer

gordinir8 · Nov 11, 2017

Yes but this method applies when 250-300 ml of developer are poured back on the 1L bottle. In the case of 120 film i am using 590cc of developer, that's more than half the total capacity.
Another method could be 1+3 but that does not apply on DELTA 400 film either! There is no time information for this film at Ilford manual and i am wonder why.
Has any of you try 1+3 on Delta 400?

Anon Ymous · Nov 11, 2017

gordinir8 said:
Yes but this method applies when 250-300 ml of developer are poured back on the 1L bottle. In the case of 120 film i am using 590cc of developer, that's more than half the total capacity.

It doesn't matter. What matters is the amount of film processed. The amount of developer components actually used up and the byproducts produced are directly related to it. In the end, you pour the used solution back to the bottle. You could have used the whole litre for 1 135 film and it would be the same.

Billy Axeman · Nov 11, 2017

gordinir8 said:
Yes but this method applies when 250-300 ml of developer are poured back on the 1L bottle. In the case of 120 film i am using 590cc of developer, that's more than half the total capacity.
Another method could be 1+3 but that does not apply on DELTA 400 film either! There is no time information for this film at Ilford manual and i am wonder why.
Has any of you try 1+3 on Delta 400?

Just use 590cc of the stock solution if your tank is that size and pour it back into the bottle when you are ready. You can repeat that for 10 films.

The definition of 'capacity' is the number of films you can develop in one liter of developer. It has nothing to do with the volume itself.

gordinir8 · Nov 11, 2017

It make sense what you are saying, i will continue to 1+1 until i finish this bottle and then switch to that method. Sorry guys but i have no relation or experience with film developing and trying to follow the manual.

Billy Axeman · Nov 11, 2017

As has been said, your intitial question was to reuse ID-11, and you can only do that for a stock solution. Dilutions 1+1 and 1+3 are not recommended.
Apart from that, if you want to use single shot 1+3 on DELTA 400 and Ilford isn't giving a time for that it isn't recommended either.

gordinir8 · Nov 11, 2017

Understood, thank you.

R.Gould · Nov 11, 2017

gordinir8 said:
Yes but this method applies when 250-300 ml of developer are poured back on the 1L bottle. In the case of 120 film i am using 590cc of developer, that's more than half the total capacity.
Another method could be 1+3 but that does not apply on DELTA 400 film either! There is no time information for this film at Ilford manual and i am wonder why.
Has any of you try 1+3 on Delta 400?

It does not matter whether you use 500ml, or 600ml of stock for 120, or 300ml for 35mm, as long as you pour it back into the bottle, I mainly use 120, I used 600ml per film, poured it back and got 10 films developed perfectly per 1 litre,

R.Gould · Nov 11, 2017

gordinir8 said:
It make sense what you are saying, i will continue to 1+1 until i finish this bottle and then switch to that method. Sorry guys but i have no relation or experience with film developing and trying to follow the manual.

Just a suggestion, but if it is your first time developing film maybe you would be better off using a one shot liqued developer,there are a lot around and it is very much easier, normally the dilution is 1/9, that is 50 ml of the the concentrate to 500ml water at 20 degress, mix just before you develop, then discard,

MattKing · Nov 11, 2017

Welcome to Photrio!
The advice above is excellent. It is important to differentiate between the volume of chemical needed to cover the film in the tank, and the volumes referred in the "capacity" calculations.
One minor point - it is "120" film, not "120mm" film. If it was "120mm" film, it would be a lot bigger!
(technically, what we refer to as 35mm film is actually 135 film, but because it happens to be 35mm wide, it happens to be known by its width).

gordinir8 · Nov 11, 2017

Well i have seen it in many sites advertising as 120mm. As i said i am new to this and got lot to learn, but thank you anyway.

MattKing · Nov 11, 2017

gordinir8 said:
Well i have seen it in many sites advertising as 120mm.

I know, and it drives me crazy!
I'm not new at this, but I continue to learn new things. Learning is always fun. If you think we can help, please do not hesitate to wander through the site, and ask questions as well.

Re use Ilford ID-11

gordinir8

Billy Axeman

darkroommike

R.Gould

gordinir8

Anon Ymous

Billy Axeman

gordinir8

Billy Axeman

gordinir8

R.Gould

R.Gould

MattKing

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gordinir8

MattKing

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Re use Ilford ID-11

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