Silver/Silver Chloride Reference Electrode
LD15 electrode, cap on
About the LD15 & LD25
We manufacture two sizes of silver/silver chloride/0.5M KCl reference electrodes to manage cathodic protection systems in reinforced concrete or steel framed buildings. Choose between the LD15 and LD25 based on your required service life and electrode size.
These electrodes are suitable for atmospherically exposed concrete and steel frame buildings. They are not recommended for submerged seawater or splash zone applications — for marine environments we recommend the RB15 manganese dioxide reference electrode.
Data sheets and installation procedures are available to download from the documentation panel. If you order the units without cable tails, please follow our instructions to connect your own cable tails.
LD15 / LD25 Technical specification
| LD15 | LD25 | |
|---|---|---|
| Silver element | ~1.2g pure silver | ~3g pure silver |
| Potential | Nominally −20mV ±10mV wrt SCE | Nominally −20mV ±10mV wrt SCE |
| Dimensions | 85mm × 15mm diameter | 75mm × 24mm diameter |
| Design life | 30+ years | 50+ years |
| Housing | White nylatron, IP68 | White nylatron, IP68 |
| Cable optional | 2.5mm² XLPE/XLPE or XLPE/PVC, blue/blue | |
| Drift | ±3mV/24h; <±10mV over 20 years | ±3mV/24h; <±10mV over 20 years |
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.