UMICORE / RHODUNA®
Umicore RHODUNA® Diamond Bright
An electrolyte for brilliant white finishes and thicker rhodium coatings.
Estimate for a 100 ml product containing 2 g Rh. Includes 20% VAT.
High Brightness
Product Description
RHODUNA® Diamond Bright produces brilliant white surfaces with a high deposition rate and good throwing power. Its low-porosity coatings offer corrosion and wear resistance. The manufacturer reports crack-free coatings up to 5 µm under appropriate operating conditions.
- Brilliant white surface
- Suitable for rack and barrel plating
- Low porosity and good throwing power
Applications: Jewellery, watches, spectacle frames, writing instruments and technical applications such as reed contacts.
Technical Specifications
- Electrolyte type
- Strongly acidic
- Rhodium content
- 2 (1.6–3.0) g/L Rh
- pH
- < 1
- Operating temperature
- 40 °C (room temperature–65 °C)
- Current density
- 1–2 A/dm² (0.5–10 A/dm²)
- Deposition rate
- 1 A/dm²’de 0.08; 2 A/dm²’de 0.10 µm/min
- Deposit purity
- 99.99% Rh
- Colour and brightness
- White · Highly bright
- Hardness
- Approx. 800–900 HV
- Maximum thickness
- Approx. 3–5 µm
- Anode
- Pt/Ti or MMO · PLATINODE® 187
Source: Umicore · 10 April 2025. Working bath values may differ from the concentrate content in the bottle. Refer to the manufacturer’s latest technical data sheet for product selection and operating conditions.
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