D76 dilution error

I wanted to stir up 1L of d76 and as the instruction points out, 800ml with water at 50c degrees and then pour another 200 ml in

I unfortunately mixed 650ml with water at 50c degrees because thats the estimated tank size. the mix has been laying in my developer bottle (open to cool down and prevent condensated water) so now i wonder if. should add the equivalent of water for the 650ml mix or if you can use it "as is"?

has anyone forgotten to add the rest water?

Where you going for 1:1 or full strength? Using a 1 Lit powder kit? Just top it off to 1 Liter for stock solution, going for 1:1? You'll have to do some math.

If mixing a partial bag (from the 1 gallon kit), how many milligrams did of D76 did you put in?

Is it a one liter package? Are you preparing stock solution? If so, I think you can just add water to make one liter (350ml in your case) and you'll be fine. Unless I'm missing something. Always do a clip test on any developer (especially newly mixed developer) before using it.

It was a one liter package. I wanted to use the dilution today and on sunday for two rolls each. as for the mix, i decided to pour out the mix since a friend of mine told me that you have to be very accurate with d76 in order to get a good mix.

Odot said:

It was a one liter package. I wanted to use the dilution today and on sunday for two rolls each. as for the mix, i decided to pour out the mix since a friend of mine told me that you have to be very accurate with d76 in order to get a good mix.

Click to expand...

I think there's some language confusion. Do you mean "solution"? Start by mixing the powder package with one liter of water as instructed. This is your "stock solution." If you've gotten this far, you're okay. You can develop your film in this stock solution (and reuse it), or you could use a "dilution" where you mix the stock solution with some amount of water immediately before you develop your film (and discard it afterwards). For example, a 1:1 dilution is equal parts stock solution developer and water.

Your friend has good intentions, but lab grade precision isn't required here. if you're off by 5% here or there (mixing stock solution or a dilution) you'll be fine. D76 is a pretty forgiving developer.

Odot said:

I wanted to stir up 1L of d76 and as the instruction points out, 800ml with water at 50c degrees and then pour another 200 ml in

I unfortunately mixed 650ml with water at 50c degrees because thats the estimated tank size. the mix has been laying in my developer bottle (open to cool down and prevent condensated water) so now i wonder if. should add the equivalent of water for the 650ml mix or if you can use it "as is"?

has anyone forgotten to add the rest water?

Click to expand...

Well Odot you are a happy guy in my eyes.
You have a stock solution of D-76 in a strongly ratio.
Only 650ml. instead of 1 Liter.
If you are able to reproduce this ration with next mixing D-76 from a 1 liter box
I would do it to everytime.
It might depend to your temperature
are you sure you have it at 50degree C ?
Now you have to notice : Your develper is a little stronger than usual.
You should multiplicate your times
x 0,66 as a starting point.
Example 2'00" x 0,66 = 1min.32sek.
The most advantage is not to shorter times - but if I am not total wrong the
shell live should be longer.
(8 month instead of 6 month)
If you are worried about corect times
you can delute a normal working
solution 1+1 with simple mathematics
from school.
But your stock solution - I would like to
have personaly ....

with regards

Let me say (greek chorus enter stage right) that mixing up a partial bag of any developer is a very unwise idea.

Odot said:

I wanted to stir up 1L of d76 and as the instruction points out, 800ml with water at 50c degrees and then pour another 200 ml in

Click to expand...

Actually, that isn't what the instructions say.
The instructions actually tell you to add water until the total volume is 1 litre.
The difference between what you posted, and what I posted comes from the fact that adding the powder to the 800 ml of water actually changes the volume slightly. So if the result is 805ml of mixed solution, the necessary additional volume of water is 195ml, not 200ml.
However, the functional difference is probably too small to make enough of a difference in your case. In some cases though, it really does matter a lot.

Gerald C Koch said:

Let me say (greek chorus enter stage right) that mixing up a partial bag of any developer is a very unwise idea.

Click to expand...

If I understood it corect the OP didn't mix a partial bag of his D-76 box.
He mixed the whole D-76 in only 650ml.
AND if this is done well and the D-76 powder is solved totaly in 650ml -where is the problem?
I see indeed a problem caused from D-76
(perhaps it will not solve proper in this much smaler amound of water) - so I doubt a bit to correct temperature.
But when everything is fine?
Comming to times of developing with tables and given times.
Sure it depends on each personal approach - but let me say to me : I can't
remember to care about given times .
Perhaps this is no good recomandation.
But remember the past - it was not like today (to have each posible time table to each film/delution/developer).
May be that a few films weren't to 100%
best developed with this method in the
past.
But I can also say a few films were much
better developed than from usual times wich were given from incorrect tables - we all know.
So it was nearly the same...
What I want to say is - own methods are most the best - even when they are
not much correct at the beginning.
The only fact of importance is therfore
methods and results shoud become better and better and better with the time.
So - why should the OP not beginn with first development with D-76 in experimental use (strong delution).
As we all know D-76 is such a friendly
developer so nothing can go wrong in a very bad way .
It is indeed a worst case to fix bw first and after this to start with developer step. But this method we leave better to some lousy comercial labs.
So where is the problem ?
To beginn with first development the main problem is allways selfconfidence.
With a special soup at the very first beginning you will soon get it .......

with regards

PS : Selfconfidence ???......if everthing is fine AFTER developing... (within the risc of live).....

Today was s not my day, i just mixed 1000ml straight in the new d76 instead of 800ml first. Please tell me this isnt going to fuck shit up.

Just to be sure, 1000ml straight is full strength, not 1:1 dillution, right?

Odot said:

Today was s not my day, i just mixed 1000ml straight in the new d76 instead of 800ml first. Please tell me this isnt going to fuck shit up.

Just to be sure, 1000ml straight is full strength, not 1:1 dillution, right?

Click to expand...

I think you're fine. And what you've described is full strength or stock solution.