Could some kind person who knows about Na2 please give me a simple set of 'drop formulas' for the Na2 solutions for palladium printing.... 10%, 5%, 2.5%... mixed from the 20% solution. I am not certain if the formulas are based on weight or volume. So the number of drops of distilled H20 to 20%Na2 for each of the dilutions would be helpful.

Thanks!