Umicore RUTHUNA® 475 Black Initial Concentrate – 2 Gram
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Acid based plating solution plates a very dark gray (anthracite) colour, almost black. Can be used alone or as a contrast colour on both yellow and white metals. For bath plating only, cannot be used for pen plating. 4 oz. bottle has 100 ml of solution containing 2 grams of Ruthenium.
To make up 1 liter of electrolyte, stir 100 ml of Ruthuna® 475 Black slowly into 800 ml of deionized water and fill up to 1 liter with deionized water.
Umicore Black Ruthenium 475 is strongly recommended to be plated over an undercoat of 18K for proper adhesion. When plating over non-precious metals, plate the item with gold prior to using Black Ruthenium.
| Umicore Ruthuna® 475 Black | |
| Anode: | Platinum or Planitized Titanium Anode |
| Beaker Type: | Acid-resistant plastic (polypropylene) required |
| Temperature: | 65° C (150° F) |
| Max. Thickness: | 0.3 Microns |
| Hardness: | 750 - 850 HV |
| Corrosion Resistance: | Good |
| Tarnish Resistance: | Good |
| Lightness (CIE-Lab): | 50 |
| Wear Resistance: | Good |
| Ventilation: | Required |
| Post Treatment: | Distilled water rinse followed by sodium hydroxide rinse to prevent spots and brownish or bluish film on the parts. An alkaline cleaner may be used instead of sodium hydroxide. |
