That's the experience of many others, the stain isn't affected by the use of normal fixers ith pH's in the region of 5.2/5.4. Prescsol is a clone of Pyrocat HD so behave the same way.
Originally Posted by Steve Smith
I've run tests with prints processed in a Pyro developer and the stain is very stable and unaffected by fixer.
Just to quash another myth -stains from using Pyro developoers don't suddenly appear after a number of years. Stains particularly with FB prints do show up after time and that might be years from inadequate fixing/washing but that can happen with any developer.