Quote Originally Posted by Alan Johnson View Post
I have the original article BJP Mar 27 1996 in which Crawley first published the formula for FX-37 and can confirm that the formula given in APUG's Articles section is correct:
Elsewhere the formula is given with 69g sulfite ,which may have originated as a typo, and in the Film Developing Cookbook the formula is also wrong, having a large excess of benzotriazole.
The Film Developing Cookbook in its current edition has the formula correct, with 5ml of a 1% benzotriazole solution.