FWIW, a few months back I corresponded with Freestyle about their E6 process - which btw is made by Photosys (with whom I also corresponded). This was the response to my inquiry on why Tetenal had 1 more step than Arista in its E6 process (Stabilizer):
"The stabilizer component is only really necessary for older films since modern color film has been designed to not need a fungicide/bactericide. However, this component is compatible with any C41 or E6 development process if you would like to use it as a final rinse. When using hard water to develop, this can come in handy."
So there is something to the "rumor" mentioned earlier. This is the sum total. I suspect it would be easier to use leftover C41 Stabilizer - which I believe is the same stuff, and keeps for months. Hope this helps.
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