I am working on my Alt shopping list.... could someone please tell me the difference between the two solutions listed that contain platinum on the B&S site.

1. Sodium Chloroplatinate 20% solution
2. Potassium Chloroplatinite Sol. No.3 (a standard mix for platinum prints)

Is the Sodium Chloroplatinate the solution that is used instead of the #2 Ferric Oxalate solution for contrast control? If so how much should be ordered for every 100ml of Pt Sol. No.3.