Introduction
Umicore Galvanotechnik GmbH is a German precious metal technology company with decades of specialisation in electroplating chemistry for the jewellery and surface finishing industries. Their electroplating solutions — rhodium, platinum, gold, and silver electrolytes, alongside protective finishing chemistry — are used by jewellery manufacturers and plating facilities worldwide who require consistent, high-quality surface results on precious metal jewellery.
Electroplating is the final step that the customer sees and touches. A rhodium-plated white gold ring that holds its brightness for years, a silver piece that resists tarnishing through a full retail season, a gold-plated surface that matches the colour specification exactly — these outcomes depend entirely on the quality of the plating chemistry used and the consistency with which it performs. Umicore’s formulations are built around delivering that performance reliably, bath after bath, across the full range of precious metal finishing applications.
NJTPL has been supplying Umicore electroplating solutions to Indian jewellery manufacturers, plating facilities, and finishing workshops — providing genuine product access, technical guidance, and local support from Mumbai.
Umicore
Why Plating Chemistry Quality Determines Surface Finishing Outcomes
Electroplating looks straightforward — current, solution, time. But the chemistry of the plating bath determines everything that matters about the result: brightness, deposit thickness consistency, adhesion strength, wear resistance, and how long the finish holds up in the hands of the end customer.
Poor quality or incorrectly formulated plating chemistry produces results that are visible and costly — uneven brightness, patchy deposits, premature wear, colour inconsistency across a batch, and bath instability that makes results unpredictable from one plating run to the next. These are not problems that finishing skill can fully compensate for. They originate in the chemistry.
Umicore’s electroplating solutions are formulated to eliminate these variables. Their products deliver:
- Consistent brightness and deposit quality across every bath cycle — no variation between the first piece and the last
- Stable bath chemistry — Umicore electrolytes are formulated for long bath life and predictable performance over extended production use
- Precise deposit thickness control — critical for rhodium plating where over-deposition wastes expensive metal and under-deposition affects wear life
- Strong adhesion on gold, silver, and platinum substrates — the deposit bonds correctly to the base metal and stays bonded through wear and handling
- Colour consistency — particularly important for gold plating where the electrolyte determines the final colour tone of the deposit
- Long-lasting surface protection — Umicore’s anti-tarnish chemistry extends the shelf life and retail appearance of silver and gold jewellery significantly
For Indian jewellery manufacturers and plating facilities finishing gold, silver, and platinum jewellery for domestic and export markets, Umicore chemistry provides the surface quality and bath reliability that consistent, professional plating results require.
Product Range
Rhoduna Diamond Bright Rhodium Electrolyte
Rhoduna Diamond Bright is Umicore’s high-brightness rhodium plating electrolyte — formulated to deliver the brilliant, mirror-bright rhodium finish that the market expects on white gold and silver jewellery. It produces a hard, wear-resistant rhodium deposit with exceptional brightness and surface uniformity, making it the correct choice for manufacturers and plating facilities where finish brightness and consistency are the primary requirements.
Rhoduna 271 Rhodium Electrolyte
Rhoduna 271 is Umicore’s precision rhodium plating electrolyte — engineered for applications requiring excellent brightness combined with superior wear resistance and deposit hardness. Particularly suited to jewellery that will see heavy daily wear — rings, bracelets, and clasps — where the rhodium deposit needs to hold its appearance through extended use. Rhoduna 271 offers stable bath performance and consistent deposit quality over long production runs.
Rhoduna PT Rhodium Platinum Electrolyte
Rhoduna PT is Umicore’s rhodium-platinum alloy electrolyte — a specialist plating solution that deposits a rhodium-platinum alloy rather than pure rhodium, producing a finish with a distinctive, slightly warmer tone compared to standard rhodium while retaining the hardness and wear resistance that rhodium plating is valued for. The right choice for designers and manufacturers looking for a premium white finish with a different aesthetic character to standard bright rhodium.
Anti Tarnish Solution
Umicore’s anti-tarnish solution is a protective finishing treatment applied to silver and gold jewellery after polishing or plating to inhibit surface oxidation and tarnishing. It forms an invisible protective layer on the jewellery surface that significantly extends the time before tarnishing becomes visible — improving the shelf life and retail presentation of silver jewellery in particular, where tarnishing is the most common cause of customer complaints and returns.
Why Indian Jewellers & Plating Facilities Choose Umicore Through NJTPL
Bath stability that makes production predictable
Umicore electrolytes are formulated for consistent performance over extended bath life — which means the plating result on the last batch of the week behaves the same as the first batch of the week. For production plating facilities, this consistency directly reduces rework and rejection rates.
Brightness and deposit quality that holds up to scrutiny
Umicore rhodium electrolytes are among the most widely specified in the global jewellery industry because their brightness and deposit uniformity are consistently above what generic or lower-grade alternatives deliver. On white gold and silver jewellery where the rhodium finish is the primary visible surface, this quality difference is immediately apparent.
Deposit thickness control protects rhodium economics
Rhodium is one of the most expensive precious metals. Consistent deposit thickness — not under-plating that wears prematurely, not over-plating that wastes metal — is directly controlled by the quality of the electrolyte. Umicore formulations are engineered for precise, controllable deposition.
Anti-tarnish protection extends jewellery shelf life
For manufacturers and retailers selling silver jewellery, tarnishing during storage and display is a constant challenge. Umicore’s anti-tarnish solution provides meaningful protection that extends the sellable shelf life of silver pieces — reducing returns and improving customer satisfaction.
NJTPL's 23 years in Indian jewellery manufacturing
means our team understands which Umicore plating solution suits which substrate, finish requirement, and production scale — and can help you set up, optimise, and troubleshoot your plating bath before and after purchase.
Frequently Asked Questions
What is the difference between Rhoduna Diamond Bright and Rhoduna 271 — and which should I use?
Both are high-quality rhodium electrolytes, but they are optimised for slightly different priorities. Rhoduna Diamond Bright is formulated for maximum surface brightness — the right choice where visual impact is the primary requirement. Rhoduna 271 is formulated for excellent brightness combined with superior deposit hardness and wear resistance — the better choice for jewellery that will see heavy daily wear. NJTPL can advise on the correct grade for your specific jewellery types and customer requirements.
What is the Rhoduna PT Rhodium Platinum Electrolyte used for — and how does it differ from standard rhodium plating?
Rhoduna PT deposits a rhodium-platinum alloy rather than pure rhodium, producing a finish with a slightly different colour tone — warmer and less stark white than standard bright rhodium — while retaining the hardness and durability that rhodium plating provides. It is a specialist finish used by manufacturers and designers looking for a premium white metal aesthetic that is distinct from standard rhodium plating.
How long does Umicore's anti-tarnish solution protect silver jewellery?
Protection duration depends on storage conditions, handling, and the environment the jewellery is exposed to. Under normal retail storage conditions, Umicore anti-tarnish treatment provides meaningful protection over an extended period — significantly longer than untreated silver. NJTPL can provide specific guidance on application method and expected protection duration for your storage and display conditions.
Are Umicore rhodium electrolytes suitable for plating over silver as well as gold substrates?
Yes. Umicore rhodium electrolytes are formulated for plating over gold, silver, and platinum substrates — the full range of precious metal base metals used in jewellery manufacturing. Correct pre-treatment of the substrate before plating is important for adhesion quality on all base metals. NJTPL can advise on the correct pre-treatment sequence for your specific substrates.
How do I maintain and extend the life of a Umicore plating bath?
Bath maintenance — monitoring metal concentration, pH, and electrolyte balance, and making controlled additions to replenish depleted components — is the key to long bath life and consistent plating results. Umicore provides technical data on bath maintenance parameters for each product. NJTPL can support you with bath setup, monitoring guidance, and troubleshooting if results change over time.
Where can I buy Umicore electroplating solutions in India?
NJTPL is the authorised Indian distributor for Umicore Galvanotechnik GmbH electroplating products. Contact us at +91-9821318963 or Rhodium@njtpl.co.in for pricing, availability, and technical consultation.
Ready to Improve Your Plating Results?
Whether you are setting up a new plating facility, upgrading from generic plating chemistry, or troubleshooting inconsistent results in an existing bath, Umicore has the right electroplating solution for your finishing requirements — and NJTPL has the stock, the knowledge, and the support to back it up.