Acid based pen plating solution plates a very dark gray (anthracite) color, almost black. Can be used alone or as a contrast color on both yellow and white metals.
For pen plating only. For bath plating, use Umicore Ruthuna Black 279 Ruthenium Plating Solution.
Contains 2 grams of Ruthenium.
Umicore Black Ruthenium can be plated directly over gold, gold plate, silver, platinum, and palladium. When plating over non-precious metals, plate the item with gold prior to using Black Ruthenium.