Can developer go bad before it's mixed?
I previously aked a question here about reducing grain with Ilford HP5 film. I was using D-76 developer that had sat unmixed in its sealed foil package for close to 20 years. One package I opened was brown inside, so I threw that out,but the next package looked white and normal, so I mixed and used it. Is it possible that the white powder was compromised, because I was not happy with my results with HP5. Since then I purchased and mixed a fresh batch of Kodak XTOL which seems to give noticably higher film speed and reduced grain. Or is XTOL just that much better? thanks, john.