Thanks for the contributions. Regrettably Ilford do not publish the details i'm looking for on the bottles-well not in the UK-hence the question. Interestingly i noticed that other contributors have talked about T-Max and the 'purple fog', and this is the reason that i felt that the Fixer/Stop Bath may have been exhausted. Certainly on mixing new stock the film was clear-but i'm now wondering whether more than one problem occurred. As ever any advice, and many thanks in advance. Andrew(posted 8684 days ago)