MMO · Ru-Ir · Ir-Ta · Platinized Titanium · Custom Assemblies
Engineered MMO, Ru-Ir, Ir-Ta, and Platinized titanium electrodes matched to your exact electrolyte, current density, and design-life targets to minimize replacement risks and operational downtime.
Before requesting a quote: an industry name alone does not define an anode. “MMO for water treatment,” “high coating,” “long life” or a current-density value without an active-area basis cannot be used to compare products reliably.
Solution Selection Guide
The table is an engineering-review starting point, not an automatic coating recommendation. Final selection depends on the full process window, electrical duty, geometry, life basis and qualification plan.
| Target reaction or process | Candidate family for review | Inputs that change the decision | Common geometry and connection questions | Qualification to agree |
|---|---|---|---|---|
| Chlorine evolution and electrochlorination | Ru-Ir MMO titanium anodes | Chloride level, full chemistry, impurities, pH, temperature, current-density basis, flow and operating schedule. | Mesh, plate or tube; active sides, masking, spacing, tabs and current feed. | Coating definition, loading basis where specified, geometry, connection and order-specific test plan. |
| Oxygen evolution and selected electrochemical duties | Ir-Ta or Ir-based MMO anodes | Electrolyte, contaminants, pH, temperature, potential/current duty, mass transfer and shutdown conditions. | Plate, mesh, tube or custom geometry; coated zones, support and connection. | Composition basis, inspection method, sampling, acceptance limits and qualification conditions. |
| Electroplating, electrolysis and selected surface-finishing processes | Platinized titanium or MMO, depending on the bath and reaction. | Bath chemistry, additives, contaminants, polarity, current distribution, active area and maintenance practice. | Mesh, plate or drawing-based assembly; Pt/coating definition, masking, tabs and fixture. | Coating metric and units, dimensional acceptance, connection checks and process-specific evaluation. |
| Impressed-current cathodic protection | MMO anode system review | Structure, soil/water/electrolyte, protection criteria, design current, operating life and project standard. | Tube, ribbon, wire, disc or canister; cable, seal, backfill, installation and monitoring. | Output and life-design basis, cable/connection scope, sealing checks and agreed project records. |
| Advanced oxidation or another specialty duty | Specialty electrode review, subject to confirmed capability and project requirements. | Target contaminant/reaction, complete matrix, by-products, hazards, treatment target and disposal requirements. | Plate, mesh or reactor-specific assembly; hydraulic access, spacing, connection and replaceability. | Pilot or qualification basis, performance owner, safety/environmental boundary and acceptance plan. |
The customer or system designer remains responsible for confirming the complete cell and process design. HELE’s review covers the agreed anode supply and qualification boundary.
Coating Families
Coating names are not interchangeable specifications. Exact composition, loading or thickness basis, active area, service conditions and inspection requirements are confirmed for each order.
Review: reaction · chloride · impurities · current-duty basis
Often reviewed for chlorine-evolution service. Suitability changes with electrolyte, impurities, pH, temperature, mass transfer, load and required operating life.
Review Ru-Ir anodes →
Review: reaction · electrolyte · contaminants · potential/current duty
Often reviewed for oxygen-evolution and selected electrochemical duties. No single Ir-based formulation should be assumed to fit every OER process.
Review Ir-based anodes →
Review: Pt definition · active area · substrate · polarity and wear
Pt/Ti can be evaluated for selected processes, but the platinum metric, coverage, electrolyte, potential/current duty and wear acceptance must be explicit.
Review Pt/Ti anodes →
Review: coating system · reaction · hazards · qualification · disposal
Specialty systems require project-specific capability confirmation, electrochemical validation and clear worker, environmental and end-of-life responsibilities.
Review specialty electrodes →Manufacturing & Supply Scope
An anode order is more than a coating name. The quotation and drawing review should align the substrate, coated area, masking, current feed, assembly, inspection and release documents. The exact manufacturing and partner scope is confirmed for the specific order.
HELE can review the stated reaction, electrolyte, electrical duty, life basis and acceptance requirements before confirming a supply proposal. Missing data remains an open item rather than an assumed condition.
The order can define titanium specification, form, dimensions, active and uncoated zones, supports, frames, welds and dimensional tolerances. Material traceability is supplied when specified and agreed.
The coating family, loading or thickness metric where applicable, active-area basis, coating map and acceptance method should use consistent units and definitions across the quotation, drawing and inspection plan.
Tabs, threaded connections, frames, welded joints, cable terminations and sealed zones are reviewed against the drawing and service environment. Electrical, mechanical and sealing acceptance must be stated where required.
Custom geometry can be reviewed from a drawing, sample, existing-anode data or interface requirements. Changes to coated area, connection, support or tolerances are recorded before order release.
Dimensional, visual, traceability, coating-related, connection and other records are supplied only to the agreed inspection plan. Not every test or document applies to every anode or order.
Anode Forms
Substrate shape affects active area, current distribution, hydraulic access, mechanical support, connection design, masking and maintenance. Geometry should follow the process and installation—not the shape name alone.
Specify: expanded/woven geometry · strand/opening · active sides · frame
Confirm coated area, masking, current feed, support and process access on the order drawing.
Specify: L × W × T · one/two-side coating · masking · tabs
Confirm flatness, active faces, edges, masks, tabs and mounting requirements.
Specify: OD · length · wall · end closure · connection
Confirm coated length, end details, current feed, cable or threaded connection and service environment.
Specify: diameter · length · coated zone · thread/lead
Confirm the active length, uncoated interface, end connection, fixture and current-density basis.
Specify: width · thickness · length · spacing · feeder
Confirm layout, current distribution, feeder connection, installation method and protection duty.
Specify: diameter · length · coil/form · termination
Confirm routing, spacing, termination, mechanical support and the environment around the connection.
Specify: profile · active face · edge mask · fixture
Confirm active surfaces, edge treatment, mounting, access for maintenance and dimensional interfaces.
Specify: drawing · coating map · assembly · test plan
Confirm all interfaces, coated and masked zones, connection details, inspection points and revision status.
Titanium anode basket is a different product role. A basket normally carries soluble anode material, while an MMO or Pt/Ti coated titanium anode is usually an insoluble active electrode. Review titanium baskets separately.
Risk Review
HELE cannot eliminate every process or system risk. A disciplined review can, however, expose incomplete specifications, non-comparable quotations and avoidable mismatches before manufacturing begins.
| Risk seen in projects | Typical specification gap | HELE review before order release | Customer or system responsibility |
|---|---|---|---|
| Incorrect coating selection | Only the industry or product name is provided; the reaction and complete electrolyte are missing. | Review the target reaction, chemistry, contaminants, pH, temperature and operating window before confirming a candidate family. | Provide representative process data and approve the final design basis. |
| Premature coating degradation | Current density, duty cycle, cleaning, shutdown or polarity conditions are unclear. | Check the load basis, active-area denominator, operating schedule, cleaning and stated failure criteria. | Maintain the agreed operating window and record deviations. |
| Quotations that cannot be compared | Loading, thickness, application mass and XRF results are treated as the same value. | Align the metric, units, method, locations, sampling and acceptance criteria in the quotation and inspection plan. | Compare suppliers against the same technical and test definition. |
| Local overload or uneven current distribution | Active area, coated sides, masking, spacing or current-feed arrangement is not fixed. | Review the coating map, active and masked zones, tabs, feeder and order drawing. | Confirm cell geometry, electrode spacing, hydraulics and system current distribution. |
| Connection heating, leakage or early interface failure | The cable, weld, thread, seal or installation environment is not defined. | Confirm connection geometry and the required electrical, mechanical or sealing checks. | Control installation, field sealing, cable routing and commissioning. |
| Unqualified recoating or replacement | Prior service, substrate condition, contamination and failure mode are unknown. | Evaluate the available history, dimensions, substrate, welds and connection before accepting a recoating review. | Provide the old-anode data, photographs, service history and failure observations. |
Process Review
The order route is confirmed against the approved drawing, coating map, connection, qualification and document requirements. Each control point should lead to a defined record or acceptance decision.
01Confirm specification, heat/lot where required, geometry, welds, coated zones, masks and drawing revision.
Possible evidence: material record, dimensional report and approved drawing.
02Control the approved cleaning, roughening or etching, handling and time between preparation and coating.
Possible evidence: route card or agreed process-control record.
03Control batch identity, coating definition, application/thermal sequence, active area and any agreed samples.
Possible evidence: batch record and specified coating-related inspection.
04Verify dimensions, coated and masked zones, visible condition, connection and the documents listed in the order.
Possible evidence: release checklist and agreed inspection package.
Inspection Evidence
A test name alone is not an acceptance criterion. The method, units, calibration or reference basis, sample locations, frequency and limits should be agreed before the order is released.
Important: XRF composition, coating loading, coating thickness, adhesion-related checks, electrochemical behavior and service life are different characteristics. One result should not be presented as proof of all the others.
Can support the ordered titanium identity and lot linkage when specified. They do not prove coating performance or system suitability.
Can confirm geometry, active faces, masks and interfaces against the drawing. It does not by itself prove current distribution in the completed cell.
Can report surface elemental composition under the stated instrument, calibration and sampling method. XRF alone does not prove adhesion, uniformity, selectivity or service life.
Can address an agreed mass or thickness metric. Units, area basis, method and acceptance range must be defined; the result is not an unconditional lifetime guarantee.
Can support comparative or order-specific qualification only when the sample, medium, temperature, current density, endpoint and interpretation are documented.
Can address the agreed electrical, dimensional, mechanical or sealing characteristics. Field installation and complete-system commissioning remain separate responsibilities.
Applications
The same industry can contain different anodic reactions, electrolytes, current duties and equipment responsibilities. Application review begins with the actual process boundary.
Define feedwater or brine chemistry, chloride, impurities, temperature, flow, production target, current duty, cell gap, cleaning and system-test basis.
Review this application →State the target reaction or contaminant, full water matrix, mass transfer, current/energy basis, by-products, electrode spacing and treatment-performance owner.
Review this application →
Define the structure, soil/water/electrolyte, protection criteria, design current, anode-bed geometry, cable/connection, installation, monitoring and project standard.
Review this application →
Specify electrolyte and metals, target reaction, impurities, temperature, current distribution, spacing, product-quality target, cleaning and maintenance.
Review this application →Inside HELE Titanium
See the substrate preparation, coating, assembly, inspection and handling environment used for titanium anode supply. Order-specific manufacturing, partner, inspection and acceptance scope is confirmed separately in the quotation and order documents.
Before Requesting a Quote
A comparable quotation aligns the reaction, chemistry, electrical-duty basis, coating definition, active and masked area, substrate, connection, design-life assumptions, inspection, release evidence and commercial scope.
Replacement & Recoating Review
A used titanium substrate is not automatically suitable for recoating. Evaluation depends on the remaining substrate, deformation, cracks, welds, connection, contamination, coating-removal route, dimensions and prior service history.
Original drawing or dimensions, coating type if known, operating chemistry, electrical duty, service time, cleaning history, failure symptoms and photographs.
Substrate thickness and distortion, cracks, welds, threads, cable or tab connection, contamination and dimensional suitability after coating removal.
Proceed to a defined recoating route, request further inspection or recommend replacement when the substrate or connection no longer meets the agreed criteria.
Recoating should not be presented as automatically restoring a used assembly to new-product performance. The accepted basis must be documented for the specific item.
FAQ
Provide the target anodic reaction, complete electrolyte chemistry and impurities, pH, temperature, pressure or flow, current and voltage range, duty cycle, polarity conditions, design-life basis, active-area definition, coating family or performance requirement, substrate form, coated and masked zones, connection, quantity, tests, documents and drawing.
Usually not in industrial electrochemistry. Titanium commonly serves as the substrate, while an MMO, platinum or another engineered coating provides the active surface. The order must identify the active coating, reaction and coated area.
They are different coating families with different reaction, electrolyte, potential and wear behavior. Ru-Ir systems are often reviewed for chlorine evolution, Ir-Ta or Ir-based systems for oxygen-evolution duties, and Pt/Ti for selected electrochemical services. Final selection requires actual operating data and an agreed qualification basis.
No. Thickness, total or precious-metal loading, application mass and surface elemental composition measured by XRF are different characteristics. The order should define the metric, units, method, locations, sampling and acceptance criteria.
No. Service life depends on the reaction, electrolyte and impurities, pH, temperature, current-density basis, voltage and polarity, mass transfer, shutdowns, connection, substrate and coating quality, cleaning and operating control. A design-life basis and agreed qualification method are more meaningful than an isolated year claim.
No. Electrode spacing, cathode condition, electrolyte management, hydraulics, power supply, controls, installation and operating practice also affect system performance. The quotation and order should define the responsibility boundary between the anode supplier, system designer and operator.
No. Recoating requires inspection of substrate thickness, distortion, cracks, welds, connection, contamination, prior coating removal and dimensional suitability. Reuse or replacement criteria must be agreed before recoating.
Unknown items can remain open for review. Mark mandatory performance requirements and permitted supplier proposals before quotation.