GAIN EXPRESS ORP Redox Electrode, BNC Type Connector Replacement Probe for Tester Meter Monitor Controller Oxidation Reduction Potential Check, 14cm Long 1.2cm Diameter 300cm Extra Long Cable : Amazon.co.uk: Garden
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Redox probe-based amperometric sensing for solid-contact ion-selective electrodes - ScienceDirect
RedOX probe / RedOX electrode for Bayrol 185300 Bayrol