Dimensionally Stable Anode (DSA)
Insoluble coated titanium anodes engineered to hold their dimensions and electrochemical output under continuous electrolysis, electroplating, water treatment and cathodic protection duty.
Get a Quote Talk to an Engineer
Selection Boundary
Introduction
A dimensionally stable anode (DSA) is an insoluble coated titanium anode: unlike soluble or sacrificial anodes, it holds its dimensions and electrochemical output while the counter electrode is consumed. The active coating — typically IrO₂-based for oxygen evolution or RuO₂-based for chlorine evolution — is matched to the target reaction, so the anode keeps operating for years in continuous electrolysis, plating and cathodic protection duty. Actual performance depends on coating chemistry, loading, current density and electrolyte chemistry, and is confirmed per quotation rather than stated as a universal value.
Ehisen applies DSA coatings in controlled multi-layers with measured precious-metal loading, and verifies every batch before dispatch. Each anode is engineered to your substrate dimensions, electrical duty, and operating conditions.
DSA Titanium Anode Formats
Standard formats include plate, mesh, tube, probe and rod. Other shapes and dimensions are produced to drawing.
Engineering Basis
The four inputs below define every DSA anode quotation. Provide them and we will confirm coating thickness, current-density rating and service life together.
| Engineering Item | Required Definition |
|---|---|
| Target reaction | Anodic main reaction (OER / CER / other) and competing reactions |
| Electrolyte | Full composition, acidity, chloride / fluoride, contaminants |
| Electrical duty | Total current, current-density basis, polarity, peaks |
| Design-life basis | Failure criterion and expected operating hours |
Technical Specifications
Standard parameters are listed below; values marked per order are confirmed against your engineering data.
| Parameter | Specification |
|---|---|
| Substrate | Grade 1 / Grade 2 titanium |
| Coating | Mixed metal oxide (IrO₂-based DSA coating) |
| Coating loading | 8–20 g/m², custom available |
| Shape | Plate / mesh / tube / probe / rod / custom |
| Dimensions | Per drawing (L × W × T) |
| Current density | Confirmed per order |
| Operating temp | Confirmed per order |
| Service life | Confirmed per loading & conditions |
Coating Control & Surface Quality
Coating loading and uniformity are measured, not assumed — the parameters that actually control anode life and current distribution.
Coating Loading & Uniformity
Active coating loading is measured and controlled per batch — the value that sets current-density rating and design life.
Bonding & Thermal Cycling
Adhesion and thermal cycling are checked during production to keep the coating stable under thermal and electrochemical load.
Order Basis
Share the five requests below and we will return a quotation with coating loading, rating and life confirmed together.
| Request | Definition |
|---|---|
| Electrolyte composition | Full formula, acidity, temperature |
| Current duty | Total current / current density / polarity |
| Coating loading target | Thickness or life target |
| Dimensions | Drawing or dimensions |
| Connection | Welding / threaded / flange |
Related Products
Not sure which coated anode fits your reaction? The links below cover the dedicated MMO families and the platinum option.
More Titanium Anode Products
FAQ
What does DSA mean?
How long does a DSA titanium anode last?
Can a DSA anode be re-coated after its coating wears out?
Get a Quote for Your Application
Send your electrolyte composition, electrical duty and design-life target — we will confirm coating chemistry, loading, current-density rating and service life together, within 24 hours.
Get a Quote Talk to an Engineer