I work in a community darkroom at the local community college. When Tri-X is put through new chemistry, no purple tinge results. After a few rolls of Tmax have been processed though, the pink dye from the Tmax film seems to migrate from the fixer or hypo bath and stains the Tri-x very evenly. At least I think that is what is going on. It doesn't seem to affect the printing characteristics although I suppose a bit higher contrast might result on VC papers. (I use neither Tri-x or VC papers anymore so haven't bothered to check.)
I'm always amazed to read of the persistent problem some have with pink dye and Tmax. Using a Hypo Clear solution and a rinse between the fixer and Hypo Clear has always given me very neutral-colored Tmax after it comes out of the final wash. Most of the pink dye ends up in the hypo clear.
Joe |