Quote Originally Posted by jp80874
I need a little more help though please. I went to Photographer's Formulary, then store, and searched on “wash test”. Nothing came up. I think I need a more exact name.
It is specified in old ANSI standard and is commonly referred to as silver nitrate test for residual fixer. Formula is published and it's simple to mix. (Note: Use deionized water when mixing silver nitrate and keep the solution in dark when not in use.)