So - for various reasons, I have not been able to do any film processing for a couple of years. I have some PMK pyro developer (parts A and B) sitting up on a shelf that has not been touched during that time. The bottles are about 2 years old and are about 3/4 full. The solution B has turned dark brown over this time. Do you guys think both bottles are still good to mix and use or should just I throw them out and get some new stuff?
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