Originally posted by tuco It always comes out clean with regular fixing and a long wash.
I did a roll of Tmax 400 in Ilford chemistry last night. I always do a prewash/warmup in water and dump that till it runs clean. The first time I used Ilford stuff (Ilfosol 3/rapid fix), the fix came out clean but i was pulling it to 200 (for the hell of it; don't ask me why). Last night the fixer I dumped was pink and I shot it at box speed. I did washes until it ran clean and the negatives look fine.
These are merely observations. I cannot explain why the altered ISO should alter the appearance of the fixative...
I should have kept it, as I have a roll of Fomapan 200 with which I could see whether the fixation powers were at all altered (following advice given here, I currently always cut the leader off and use it to determine clearing/fixing time).