MN15 Reference Electrode
A common method of assessing the corrosion state of reinforcing steel is to measure the steel potential using a reference electrode.

CPT manufacture a reference electrode, MN15, which is buried in a small hole formed in the concrete surface. This can then be used to measure the steel potential either manually, using a high impedance voltmeter, using a datalogger or remotely using a cellular phone link.

The MN15 reference electrode offers significant advantages versus conventional electrodes as it is based on a manganese oxide composition:

  • High surface area prevents loss of contact with host concrete
  • Chloride free – no release of aggressive salts
  • Excellent polarisation characteristics – stable potential when current is drawn
  • Compact unit facilitates simple installation



MN15 Data Sheet