I recently switched from Kodak Rapid fixer, with the added hardener for film use, to Ilford Rapid Fix to support a company that still makes enlarging paper and seems to have a commitment to traditional photography. I just found out that the Ilford is a non-hardening fixer. While I handle my film very gently, I'd like to use a hardener. Reviewing the threads on fixer-hardener just confused me. Some said it prolonged the wash, others extolled the "billions" of sheets they'd processed in trays without a scratch even with no hardener. I now develop 4x5 in a Jobo Expert drum and 120 in a Nikkor-style tank.
I have quite a bit of Kodak hardener, since I never used it when mixing fixer for paper. Does anyone know, or could one of you chemists out there hazard a guess, if I could safely add it to the Ilford product?
Thanks for any responses.
Eric
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