ecoTech pH Electrode for Soils

The ecoTech pH probe provides permanent in-situ measurement of the soil pH in laboratory and field applications. It is frost-resistant, durable and low maintenance. Data logging options include the ecoTech enviLog, or a connection module with standard SDI-12 output. pH sensors are commonly used together with ecoTech redox electrodes.

Principles of operation

The pH glass probe for soils works in combination with a separate reference electrode (Ag/AgCl) as a two-probe electrode. It is therefore protected against accelerated aging by a diaphragm that prevents loss of electrolyte solution. Leakage of the electrolyte is prevented by imbedding the reference electrode in a so-called salt bridge with thickened KCl, which makes electrical contact to the soil. It is applicable together with ecoTech’s redox electrode with the same special designed monitoring module and even in combination with the redox electrode in the same circuit.

Advantages

• First pH electrode for in-situ soil pH monitoring
• Permanent installation
• Laboratory and field application
• Frost resistant
• Low maintenance
• Long-term tested
• Specially designed connection module for data logging
• Combination with redox electrodes in the same circuit possible
• Protected against accelerated aging