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To avoid finding yourself in this situation going forward, a concentrate will give you fresh chems every time! If it's off-color or smells, of course dump it. You've seen advice to develop in old or make fresh, and both arguments have their validity. I argued earlier to develop in the old stuff, but now I am swayed the other way. Even if you don't care now, what if some unlikely turn of events makes these the most valuable shots you ever take, like what if your best friend becomes President and you have the only early shots.
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In my experience, storing D76/ID11 full-strength in 150 ml (olive glass) sealable containers, filled up to the rim (really just a an air bubble or two left) and stored in the dark, there is no color change or smell for up to 18 months (I did not test for a longer time). Still, the developer activity is not stable over this time frame. There is a slow increase in activity, which I found to be acceptabel but not negligible.
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 Originally Posted by fschifano
Look, I'm just about the most frugal guy out there; and I still wouldn't bother to take the chance. As far as the environmental impact of tossing a few litres of developer down the drain, well that's just a red herring. The stuff is not particularly toxic, and it breaks down very qickly in the presence of oxygen. The worst thing that can be said about it is that developers will rob oxygen from the surrounding environment. Part of what goes on in a modern sewage treatment plant is aeration of the effluent for just that reason - it's not even a problem if the stuff is already oxidized.
Tell that to the old ex Kodak man, you want someone to pour an unused developer with 100g per litre Sodium Sulphite down a drain, along with un-oxidised Metol & Hydroqinone.
He'd send you to the Guillotine for getting shot of 20g Sulphite in HCA 
Luckily we share the same real world realism.
Ian
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I have a concentrate HC-110 since 2006 and I still use dilutions from this and it looks alive! I have already developed 100 films and the 1/3 is still in the bottle. This developer seems to last for ages!
P.S.: I always check its tension if I haven't use it for a while.
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Originally Posted by Curt
I'd say go for it Henri if the film is of no or little importance, the reason I say this is that in using it you will learn what is and isn't possible. Everything is a learning process, this a as good a time as any to practice loading the film and going through the procedure of development again. There have been some unexpected results from situations like this, you never know what might come out. Are these pinhole shots?
How is college going, I remember those days, I couldn't wait for the breaks so I could do some personal work. It seemed like I was working everyday year 'round for literally years. I could convert an apartment bathroom to a darkroom in minutes. Then one day I woke up and found myself done with military service, college, work, more college, more work, raised a family, became retired and have a darkroom that's permanent. It all seems like a flash so enjoy it all while you can.
Curt
I agree with you Curt. The process of shooting and developing film is a much more rewarding learning experience. Even if the photos hadn't come out, half the fun is the unexpected! Althought I love pinhole photography these were just shot with an old film PnS I had laying around. College is almost over by the way  .
I did test both the developer and fixer with the leader and they seemed unaffected by age. Because I was working at a higher temp than normal I reduced dev time to 6min and fixed for 4.5min just to make sure it worked. Looking at the negatives the photos came out just fine (I'll know for sure when I get them scanned).
I shoot film mostly because it releases me of control and allows for the unknown. So in a way, I was hoping for some random results but it's good to know developer and fixer can last so long past their "expiration date."
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Just hung up a roll of Rollei Retro 100 developed in the last ounce from my 1 quart bottle of FG-7. It looked pretty nasty, but I said to myself, "What the hey? Here is an opportunity to see if nasty looking FG-7 performs as bad as it looks." Short story...Even with a 10% increase in development time the negatives are thin, thin, thin.
Lesson learned. Pity...there were some nice photos on that roll...
Steve
(Replacement developer is on the way. Ditto for a supply of glass bottles to aliquot it off into.)
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