UMICORE / RHODUNA®
Umicore RHODUNA® 275
RHODUNA® 275 Black electrolyte for bright finishes ranging from anthracite to black.
Estimate for a 100 ml product containing 2 g Rh. Includes 20% VAT.
Black Pen Plating
Product Description
RHODUNA® 275 Black applies bright, dark rhodium to selected areas of jewellery and accessories using a pen-plating unit. The anthracite-to-black shade depends on the voltage used. The product can also be used for rack plating; the process values below refer to pen plating.
- Bright anthracite–black rhodium surface
- Crack-free coatings up to approximately 0.1 µm
- Fast deposition and uniform layers
Applications: Jewellery, watches, writing instruments, spectacle frames and fittings.
Technical Specifications
- Application
- Pen plating
- Electrolyte type
- Strongly acidic
- Rhodium content
- 2 g Rh / 100 mL
- pH
- < 1
- Operating temperature
- Room temperature (20–40 °C)
- Voltage
- 8–10 V (maks. 12 V)
- Deposition rate
- 0.1 µm/min’ya kadar
- Deposit purity
- 99.9% Rh
- Colour
- Anthracite–black
- L*a*b* · 10 V
- 61.0 / 1.1 / 4.0
- Hardness
- Approx. 600 HV
- Maximum thickness
- Approx. 0.1 µm
Source: Umicore · 24 March 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.
LET’S FIND THE RIGHT PRODUCT TOGETHER
Let’s discuss your workshop’s
needs.
Tell us the product, quantity and application you need.
Contact us by email for product information and a quotation.
Istanbul · Grand Bazaar and Kuyumcukent
Your email application will open.