Quote Originally Posted by noseoil
Dr Phil,
A good substitute for an acidic rapid fixer is Photographer's formulary's TF4. It is an alkaline fixer which works well.
Am I to understand then that Kodak's Rapid Fixer is Acidic? Sandy King's article calls for an Alkaline (basic) fixer. How alkaline or acidic are each of these fixers? Are there thresholds that shouldn't be crossed? Hmmm. I think I am going to run over to the office tomorrow and grab a pH meter.