The ilford 40 print reference is for processing to a commercial archival standard around (7-10) years. If you use a wash aid you may extend the Commercial capacity of a one tray fix. The fix has a capacity to process maybe 60 to 80 prints but as more prints run through the fix the more silver thiosulfate compounds build up reducing print life.
Originally Posted by Richard Jepsen
If you limit fix capacity to (10) 8x10s per L, you don't need a wash aid to obtain optimum permanence without toning. If you tone, you must use a wash aid for optimum permanence.
I'm a simple guy with a dry unvented DR. If your print capacity is high explore ways to recover silver. There seems to be a desire for one fix tray and higher capacity. Recommend RC paper which allows higher fix capacity and uses less water.
Last edited by Richard Jepsen; 03-14-2013 at 08:22 PM. Click to view previous post history.