SuperBright Pen Plating Solution 1/4 Gram, 1/2 Gram or 1 Gram Rhodium Metal Pen rhodium plating solutions have a different PH and are more concentrated than bath rhodium plating solutions. These highly concentrated formulas are designed for applications where precise or two-tone plating is needed. Great for quick repair jobs or small touch up areas where bath plating would not be convenient. Superbrite rhodium deposits quickly and has great throwing power. The results are a brilliant mirror white finish that will wow you. You can plate rhodium directly over gold, platinum, palladium and nickel. When plating over silver or base metals it is best to have a pre-plate of nickel or palladium first. The formulation contains an anti-burn technology which allows you to plate a various voltages for longer period of time without burning your pieces. Plate at 6 volts at room temperature.