I've had great results with Photo Flo. I after rinsing my negatives 12+ times (still on the reel in the open canister), I add a few drops of Photo Flo to the empty canister, fill slowly, let sit for about a minute, then rinse again about 10-12 times. It's also important to hang your film to dry in a relatively dust-free area.(posted 9014 days ago)Asher