My argument is not whether Permawash is a good product. I'm sure enough that it is that I have used Permawash for my own film and paper. My argument is solely whether I trust their verbiage and instructions, for anything better than momentary print survival. I use a higher concentration, longer rinse, longer bathing in wash aid and longer wash times. I use the conservative times that Kodak suggests. I'd rather be safe than sorry.