I am using Pot. just because I bought the cheaper of the two when I started
and still have it around.
>>  In the meantime, I have a question for the gumbies/chemists out there.  I
know
 the saturation values of the various dichromates differs, that ammonium
 dichromate saturates around 28% (I think) in solution.  I've always thought
 that this salt was better in terms of printing speed (don't know where I read
 that one), but isn't potassium dichromate more concentrated in a saturated
 solution, and if so, wouldn't this salt be better in terms of maintaining a
 higher viscosity emulsion and thus minimizing the stain problem?  Maybe I've
 been using the wrong salt all along. Is potassium dichromate best suited for
 the process?  >>