right! This is a dumb question but I seem to be having trouble with it lately. What is the useful life of Kodak Fixer ? How many rolls of film can one expect to process before the fixer is exhausted? Is shelf life a concern? Does the stuff "go bad" just sitting in the bottle? Finally, and only marginally related, I know that TMAX films are especially herd on fixer, is this also true with Ilford's Delta product line? TIA, Brad.