I've also just found This thread from APUG, where this site is referenced, which appears to go into some detail about the 'Ilford Wash'.
The FP4 datasheet states the Ilford way too - Page 5 of this PDF
Last edited by namke; 11-03-2008 at 02:59 PM. Click to view previous post history.
Reason: corrected second link; added link to FP4 datasheet