Quote Originally Posted by philsweeney
In Dick Arentz's book he has a recipe for the 15% solution:

distilled water at 100F: 55ml
palladium chloride: 5 grams
sodium chloride: 3.5 grams

Sandy King's article on Kallitypes specifies a 20% solution to make up a palladium toner. Anyone know the correct recipe?

The formula in Dick Arentz' book is a standard solution for palladium printing. It is based on the use of Palladium (II) Chloride.

The 20% solution I mention is the 20% Palladium Solution #3 of Bostick and Sullivan. or Sodium Chloropalladite.

Either will work for toning kallitype prints or for making palladium prints.