Rhodium Weiß + Schwarz
Rhodium Electrolyte – White & Black Rhodium Plating Solutions
Premium Rhodium Plating for Jewelry, Technical & Industrial Applications
Discover high-quality rhodium electrolytes (white and black) for brilliant, durable, and highly resistant coatings. Rhodium is one of the hardest precious metals and is widely used as a final finishing layer for maximum shine, protection, and long-term performance.
Suitable for bath plating, brush plating, and pad plating.
💡 Note: For optimal adhesion and durability, a pre-plating layer (e.g. palladium or gold) is strongly recommended.
Key Benefits
- ✔ Bright white and deep black high-gloss finishes
- ✔ Extremely high hardness and wear resistance
- ✔ Excellent corrosion and tarnish protection
- ✔ Uniform and highly adhesive coatings
- ✔ Suitable for bath, brush, and pad plating
- ✔ Ideal for jewelry, watches, and technical components
- ✔ Perfect as a final finishing layer
White vs Black Rhodium – Key Differences
| Type | Properties | Application |
|---|---|---|
| White Rhodium | Bright, reflective, classic | Jewelry, white gold, silver |
| Black Rhodium | Dark, elegant, modern | Designer jewelry, contrast finishes |
| Rhodium (General) | Hard, durable, corrosion-resistant | Final coating |
👉 Tip: Use white rhodium for classic brilliance and black rhodium for modern, high-contrast designs.
Technical Specifications
| Parameter | Value / Recommendation |
| Metal Content | approx. 1–2 g/L Rhodium |
| Voltage (Bath) | 2.0 – 4.0 V |
| Voltage (Brush/Pad) | 3.0 – 6.0 V |
| Temperature | 20 – 40 °C |
| pH Value | strongly acidic |
| Electrodes | Platinum or titanium |
| Layer Thickness | typically 0.1 – 0.5 µm |
💡 Professional Tip: Rhodium is usually applied as a thin top layer to achieve maximum brilliance and protection with minimal material usage.
Applications
- Jewelry (rings, white gold, silver, fashion jewelry)
- Watches and luxury goods
- Electrical contacts and precision parts
- Technical components requiring durability
- Decorative and protective coatings
Application Process
- Cleaning & degreasing
- Surface activation
- Pre-plating (recommended)
→ e.g. palladium, gold, or silver - Rhodium plating (bath / brush / pad)
- Post-treatment (rinse & dry)
💡 Pro Tip: A palladium underlayer significantly improves adhesion and long-term durability.
When to Use Rhodium
| Goal | Recommendation |
| High-gloss finish | ⭐⭐⭐⭐⭐ |
| Tarnish protection | ⭐⭐⭐⭐⭐ |
| Wear resistance | ⭐⭐⭐⭐⭐ |
| Premium finishing | ⭐⭐⭐⭐⭐ |
👉 Conclusion: Rhodium is the ultimate choice for high-end, durable and visually perfect coatings.
Frequently Asked Questions (FAQ)
What is the difference between white and black rhodium?
White rhodium provides a bright, mirror-like finish, while black rhodium offers a dark, elegant appearance.
Why use rhodium as a final layer?
Due to its extreme hardness, corrosion resistance, and brilliant surface finish.
Is pre-plating necessary?
Recommended, especially for silver and white gold, to improve adhesion and coating quality.
Which electrode is best?
Platinum electrodes deliver the most stable and high-quality results.
Choose Your Rhodium Electrolyte Now
Whether bright white or deep black – find the perfect rhodium electrolyte for your application.
👉 Order now and achieve professional, long-lasting plating results.
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White Rhodium Electrolyte – Ready-to-Use Bright Rhodium Plating Solution (2.0 g/L Rh)Professional Rhodium Electrolyte for Brilliant White, High-Gloss and Wear-Resistant Rhodium CoatingsThe White Rhodium Electrolyte is a premium, ready-to-use bright rhodium plating solution developed for depositing brilliant white, mirror-bright, hard, and highly wear-resistant rhodium coatings.Designed for demanding decorative and technical electroplating applications, this electrolyte is ideal for finishing jewelry, watches, eyewear frames, precious metal components, and high-value metal surfaces. It is also widely used as an anti-tarnish coating for silver, providing long-lasting brilliance and excellent surface protection.With a rhodium content of 2.0 g/L Rh, the electrolyte produces high-purity rhodium deposits with coating thicknesses of up to 1.0 µm. The resulting coatings offer exceptional hardness, excellent abrasion resistance, outstanding corrosion protection, and a brilliant white finish.ApplicationsThe White Rhodium Electrolyte is ideal for:JewelryRingsNecklacesPendantsBraceletsEarringsWatches and watch componentsEyewear framesSilverwarePrecious metal componentsDecorative metal finishingLuxury accessoriesTechnical componentsHigh-quality surface finishingSuitable for:JewelersGoldsmithsJewelry manufacturersWatchmakersEyewear manufacturersElectroplating companiesIndustrial applicationsProfessional workshopsProduct BenefitsReady-to-use bright rhodium plating solution2.0 g/L rhodium contentBrilliant white, mirror-bright finishExtremely hard and wear-resistant rhodium coatingsOutstanding corrosion resistanceExcellent anti-tarnish protection for silverUniform metal depositionHigh-purity rhodium coatingsSuitable for decorative and technical applicationsProfessional electroplating qualitySuitable Base MaterialsThe electrolyte can be used on various metals and properly prepared electroplated surfaces, including:GoldWhite goldYellow goldRose goldSilverPlatinumPalladiumNickelStainless steelSuitable electroplated intermediate layersFor optimum adhesion and coating quality, all workpieces should be thoroughly cleaned, degreased, and activated before rhodium plating.Technical SpecificationsProduct TypeBright Rhodium ElectrolyteRhodium Content2.0 g/L RhpH Value< 1Recommended Operating ConditionsParameterValueVoltage2–3 VoltsBath Temperature20–40 °CPlating TimeApprox. 2 minutes (1–10 minutes)Electrode MaterialGraphite or Platinum ElectrodesAnode/Cathode RatioApprox. 1:1Current Density0.5–2.0 A/dm²Workpiece AgitationRecommendedDeposition RateApprox. 6–8 mg/A·minBath FiltrationRecommended for bath volumes above 10 litersCoating PropertiesThe deposited rhodium layer provides:Brilliant white finishMirror-like high glossExceptional hardnessExcellent abrasion resistanceOutstanding corrosion protectionSuperior anti-tarnish protectionLong-lasting durabilityPremium decorative appearanceDeposit CharacteristicsHardness: 800–900 HVMaximum Coating Thickness: Up to 1.0 µmDensity: Approx. 12.4 g/cm³Processing RecommendationsFor optimum plating results, all parts should be thoroughly cleaned, degreased, rinsed, and properly activated before electroplating. Maintaining the recommended voltage, bath temperature, and plating time ensures uniform deposition and maximum coating quality.Changes in operating conditions may affect coating thickness, brightness, and overall deposit quality.Available VersionsReady-to-use White Rhodium Electrolyte – 2.0 g/L RhConcentrate – 2 g Rh / 100 ml, sufficient to prepare 1 liter of plating solutionQuality from Betzmann GalvanikBetzmann Galvanik develops premium precious metal electrolytes for professional electroplating applications in jewelry manufacturing, watchmaking, luxury goods, industrial surface finishing, and technical industries.Our rhodium plating solutions are manufactured to the highest quality standards, ensuring excellent process stability, consistent plating performance, and brilliant, durable rhodium coatings for professional users worldwide.
Content: 0.05 Liter (€1,120.00 / 1 Liter)
Black Rhodium Electrolyte – Ready-to-Use Black Rhodium Plating Solution (2.0 g/L Rh)Professional Black Rhodium Electrolyte for Elegant Anthracite-Grey Decorative Rhodium CoatingsThe Black Rhodium Electrolyte is a premium, ready-to-use black rhodium plating solution developed for depositing elegant dark anthracite-grey rhodium coatings. The deposited coatings are characterized by their uniform color, excellent color consistency, high wear resistance, and premium decorative appearance.Designed specifically for decorative electroplating applications, this electrolyte is ideal for finishing jewelry, watches, eyewear frames, luxury accessories, and high-quality metal components. Its simple bath maintenance and user-friendly operation make it an excellent choice for professional electroplating. Since the electrolyte operates efficiently at room temperature, no additional heating is required, reducing both energy consumption and processing time.With a rhodium content of 2.0 g/L Rh, the electrolyte produces premium black rhodium coatings with a maximum thickness of 0.5 µm.ApplicationsThe Black Rhodium Electrolyte is ideal for:JewelryRingsNecklacesPendantsBraceletsEarringsWatches and watch componentsEyewear framesLuxury accessoriesDecorative metal finishingPremium surface finishingDesigner metal componentsSuitable for:JewelersGoldsmithsJewelry manufacturersWatchmakersEyewear manufacturersElectroplating companiesProfessional workshopsProduct BenefitsReady-to-use black rhodium plating solution2.0 g/L rhodium contentElegant dark anthracite-grey finishUniform and color-consistent coatingsExcellent wear resistanceEasy bath maintenanceUser-friendly operationOperates at room temperatureNo bath heating requiredIdeal for decorative luxury finishesProfessional electroplating qualitySuitable Base MaterialsThe electrolyte is suitable for various metals and properly prepared electroplated surfaces, including:GoldWhite goldYellow goldRose goldSilverPalladiumPlatinumNickelStainless steelSuitable electroplated intermediate layersFor optimum adhesion and coating quality, all workpieces should be thoroughly cleaned, degreased, rinsed, and activated before black rhodium plating.Technical SpecificationsProduct TypeBlack Rhodium ElectrolyteRhodium Content2.0 g/L RhpH Value< 1Density1.02–1.07 g/cm³Recommended Operating ConditionsParameterValueVoltage2–3 VoltsBath Temperature20–27 °CPlating TimeApprox. 2 minutes (1–5 minutes)Electrode MaterialGraphite or Platinum ElectrodesAnode/Cathode RatioApprox. 1:1Current Density1.0–1.5 A/dm²Workpiece AgitationRequiredDeposition RateApprox. 6–8 mg/A·minBath FiltrationRecommended for bath volumes above 10 litersCoating PropertiesThe deposited black rhodium coating provides:Elegant dark anthracite-grey finishUniform color distributionExcellent color consistencyHigh wear resistancePremium decorative appearanceLong-lasting durabilityHigh-quality surface finishDeposit CharacteristicsHardness: 300–370 HVMaximum Coating Thickness: Up to 0.5 µmDensity: Approx. 10.5 g/cm³Processing RecommendationsFor optimum plating results, all components should be thoroughly cleaned, degreased, rinsed, and activated before electroplating. Following the recommended operating parameters ensures consistent coating thickness, uniform color, and excellent surface quality.Changes in voltage, bath temperature, or plating time may influence the final color shade, coating thickness, and deposit quality.Available VersionReady-to-Use Black Rhodium Electrolyte – 2.0 g/L RhQuality from Betzmann GalvanikBetzmann Galvanik develops premium precious metal electrolytes for professional electroplating applications in jewelry manufacturing, watchmaking, eyewear production, luxury goods, and industrial surface finishing.Our black rhodium plating solutions are manufactured to the highest quality standards, ensuring excellent process stability, consistent plating performance, and elegant anthracite-grey rhodium coatings with outstanding durability and color consistency for professional users worldwide.
Content: 0.05 Liter (€1,060.00 / 1 Liter)
Sulfuric Acid 10% Reagent Grade – Versatile for Electroplating, Pickling and Surface ActivationHigh-Purity 10% Sulfuric Acid for Versatile ApplicationsThe 10% Sulfuric Acid, reagent grade, from Betzmann Galvanik is a versatile ready-to-use sulfuric acid solution for electroplating, metal surface treatment, pickling, deactivation/derusting, surface activation and other technical applications.With a defined concentration of 10% sulfuric acid, this ready-to-use solution is particularly practical for applications requiring a consistent acid concentration.In electroplating, sulfuric acid is commonly used for metal surface preparation and activation. Pickling and acid activation can remove oxides and other surface residues and help prepare suitable metal surfaces for subsequent electroplating.Versatile – Not Only for ElectroplatingThis 10% sulfuric acid solution is not limited to one specific electroplating process. Depending on the material and process conditions, it can be used for a wide range of technical applications.Typical applications include:Pickling and activation of suitable metal surfacesRemoval of oxide layersSurface activation before electroplatingPreparation of metal surfaces for subsequent coatingsElectroplating pretreatmentElectrochemical applicationsTechnical cleaning applicationsLaboratory applicationsSurface treatment of suitable metalsGeneral chemical-technical applicationsImportant: Suitability, treatment time and process conditions always depend on the material, surface condition and subsequent process.Particularly Important: Pickling Before ElectroplatingOne of the most important applications is pickling and activation of metal surfaces before electroplating.During pickling, thin surface films such as oxides and other unwanted residues can be removed. This can provide a cleaner and more active surface for the subsequent electroplating process.A typical pretreatment sequence may be:Cleaning → Degreasing → Rinsing → Pickling / Activation → Rinsing → ElectroplatingProper surface preparation is essential for good adhesion and consistent electroplating results.Examples of Pickling and Activation ApplicationsDepending on the material and subsequent coating process, a diluted sulfuric acid solution can be used for activation or pickling of suitable metallic surfaces.Potential applications include:SteelIronSuitable copper alloysCertain brass surfacesOther acid-compatible metal surfacesImportant: Not every metal is suitable for treatment with sulfuric acid. Particular care is required with aluminium, zinc, Zamak and sensitive alloys. Material compatibility should always be tested before use.For stainless steel, the specific grade and intended activation process must also be taken into account.Ideal for Electroplating PretreatmentA clean and properly activated surface is one of the most important requirements for a high-quality electroplated coating.Where suitable for the substrate and process, 10% sulfuric acid can be used as part of the pretreatment sequence before:Gold platingSilver platingNickel platingCopper platingChrome platingRhodium platingPalladium platingOther compatible electroplating processesThe exact pretreatment must always be adapted to the base material, existing surface coating and subsequent electrolyte.Sulfuric Acid for Pickling and Surface ActivationPickling chemically removes unwanted surface layers, while activation prepares the metal surface for the subsequent coating process.Depending on the substrate and process, suitable sulfuric acid treatment can help to:✔ Remove or reduce oxide layers✔ Remove unwanted surface films✔ Prepare a cleaner metal surface✔ Improve surface activation✔ Prepare suitable substrates for subsequent electroplatingThe actual effect depends on the metal, acid concentration, temperature and treatment time.Practical Electroplating PretreatmentA typical process sequence can be:1. Mechanical CleaningRemove heavy contamination, polishing compounds and residues.2. DegreasingRemove oils, grease and organic contamination.3. RinsingThoroughly rinse the workpiece with water.4. Pickling / ActivationTreat the compatible metal surface with the sulfuric acid solution.5. Thorough RinsingRemove all remaining acid residues.6. Proceed Directly to PlatingContinue with the intended electroplating process without unnecessary delay.The exact treatment time and process conditions must be determined according to the substrate and intended plating process.Suitable for Workshop, Laboratory and Technical ApplicationsDue to its defined 10% concentration, this sulfuric acid solution is also suitable for numerous chemical-technical applications.Possible applications include:Electroplating workshopsSurface treatmentLaboratory workTraining and educational applicationsMetalworkingRestorationRepair applicationsElectrochemical processesTechnical cleaningSurface activationThis makes 10% sulfuric acid a versatile ready-to-use solution for users who require a defined sulfuric acid concentration.Product Advantages at a Glance✔ 10% sulfuric acid solution✔ Reagent grade✔ Ready to use✔ Versatile for suitable technical applications✔ Ideal for pickling and surface activation✔ Suitable for electroplating pretreatment✔ Useful for cleaning and activating suitable metal surfaces✔ Suitable for workshops, electroplating and laboratory applications✔ Available in different container sizes✔ Quality from Betzmann GalvanikTechnical SpecificationsPropertySpecificationProductSulfuric Acid 10%, Reagent GradeConcentration10%CAS No.7664-93-9EC No.231-639-5Article NumberSW10074ApplicationsPickling, Activation, Electroplating Pretreatment, Technical ApplicationsAvailable Sizes250 ml, 500 ml, 1,000 ml, 2,000 ml, 5,000 mlSupplierBetzmann GalvanikSafety InformationSulfuric acid is a corrosive/irritating chemical and must be handled with appropriate care.Wear suitable protective gloves and eye/face protection when handling the product. Avoid contact with skin and eyes.Please always consult the current Safety Data Sheet (SDS) and product labeling before use.Use only in accordance with the intended application and applicable safety requirements.Betzmann Galvanik – Professional Surface PreparationAt Betzmann Galvanik, you will find not only electrolytes for the actual plating process but also products for the essential pretreatment of metal surfaces.From degreasing, pickling and activation through to the final electroplating process, Betzmann Galvanik offers suitable products and accessories from a single source.A professional electroplating process starts with a clean, grease-free and properly activated surface.ConclusionThe 10% Sulfuric Acid, reagent grade, from Betzmann Galvanik is a versatile, ready-to-use sulfuric acid solution for a wide range of technical applications.In electroplating, where suitable for the substrate and process, it is particularly useful for pickling, surface activation and pretreatment of metal surfaces before subsequent electroplating.Betzmann Galvanik – chemicals, electrolytes, electroplating equipment and accessories for professional surface finishing.