Rhodium J1

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RHODUNA® J1 Rhodium Plating Electrolyte Concentrate – 100ml

Achieve a flawless, brilliant white finish with RHODUNA® J1, the industry-standard rhodium electrolyte engineered for exceptional decorative plating. This concentrated 100ml bottle is the ideal choice for boutique jewelers, watchmakers, and precision plating workshops looking to achieve an ultra-bright, mirror-like precious metal coating without purchasing industrial volumes.

Specially formulated for both rack and barrel plating systems, RHODUNA® J1 ensures a 99.99% pure rhodium layer that is highly resistant to abrasion, tarnish, and corrosion. Its high throwing power ensures an even, consistent coating on intricate jewelry, high-end watches, optical frames, and premium writing instruments, allowing for crack-free deposition up to 0.3 μm.

Key Features & Benefits

Brilliant White Finish: Delivers a bright, high-purity (99.99 wt.% Rh) reflective coating that elevates luxury goods.

Convenient 100ml Size: Perfectly portioned for small-scale batches, repair work, and artisan studios.

Exceptional Hardness: Exceptional wear resistance with a Vickers hardness rating of 800–900 HV.

Superior Throwing Power: Achieves excellent uniform thickness even on complex, intricate geometries.

Low Porosity: Provides robust tarnish and corrosion protection with thin, efficient layers.

Technical Specifications

ParameterSpecification / Value

Volume100 ml

Electrolyte TypeStrongly Acidic (pH < 1)

Rhodium Content2.0 g/l (Range: 1.6 – 2.4 g/l)

Purity99.99 wt.% Rh

Coating Hardness800 – 900 HV

Max Coating ThicknessUp to 0.3 μm (Crack-free)

Deposition SpeedApprox. 0.025 μm/min (at 1 A/dm²)

Operating Temperature35 °C (Range: 20 – 40 °C)

Current Density Range0.5 – 2.0 A/dm² (Optimal: 1.0 A/dm²)

Voltage Range2.0 – 4.0 V

Recommended AnodesPlatinized Titanium (Pt-Ti) or Mixed Metal Oxide (MMO)

Compatible Base MetalsSilver, Gold, Copper & Copper alloys, Nickel & Nickel alloys