Pseudo MMO/Ti Reference Electrode
About the MMO/Ti Pseudo Reference Electrode
These are pseudo (decay) reference electrodes which can be used to monitor cathodic protection systems. The potential of the electrode is dependent on oxygen levels and pH in the concrete. As a result, calibration certificates cannot be provided for these electrodes.
MMO/Ti electrodes are primarily used for depolarisation measurements. They are particularly useful as a long-term complement to all permanently installed reference electrodes — when other electrodes approach the end of their service life, the MMO/Ti probes continue to provide depolarisation measurement capability.
Technical specifications
| Element | High purity titanium ASTM B348 Grade 1 with mixed metal oxide (iridium-based) coatings |
|---|---|
| Potential | Variable, pH dependent (calibration certificates not available) |
| Dimensions | 75mm long × 6.35mm diameter; measuring interface 1,500mm² |
| Cable | 2.5mm² XLPE/XLPE or XLPE/PVC, yellow/yellow |
| Cable connection | Sealed with epoxy-lined heat shrink |
| Design life | 50+ years (functional life likely limited by cables) |
Why us
30 years of proven performance
Trading since 1994
Over 30 years manufacturing reference electrodes. Our earliest installations — supplied in 1994 and 1995 — are still performing in harsh environments today.
Calibrated & certified
Every electrode is individually checked against a master reference and supplied with a calibration certificate traceable to ISO 12696:2022.
Made to order
Manufactured to your specified cable lengths, sizes and configuration. We advise on specification and get back to you within 24 hours.
Shipped worldwide
Supplied to infrastructure projects in 45+ countries — from UK motorways to the Burj Khalifa. Exported from the UK via DHL courier.