Not really looking for a hardening fixer because I noticed that the scratches have appeared even before fixing. I did however observe that using TFX-2 with Efke PL100 has so far resulted in 100% scratch-free negs (about 25 sheets so far - touch wood). Is it the metol? Is it the glycin? Has anyone else had the same observation with Efke PL100 being more scratch prone with certain developers? Or is it simply coincidence (luck) that those sheets I used with TFX-2 did not inadvertently get damaged on the way in and out of the holder and on the way in and out of the BTZS tubes?

What is the ingredients in that so -called hardening developer?