Ingredients: Distilled Water, Kremer Watercolor Medium and Pigments
Handling: Mix several drops of Kremer Watercolor Medium and a little bit of Distilled Water with 1 – 3 teaspoons of Pigments. Grind this mixture in a Mortar or with a Glass Muller to form a homogeneous paste, that can be filled in the Watercolor Pans. The Watercolor has to dry and harden.
Tip: Only use a thin layer while filling to prevent cracking.
Pigments that are easy to handle: Cadmium-, Cobalt- and Ultramarinepigments, Iron Oxides and Earth Colors.
Source: Kremer Pigmente.