0-14 pH Electrode Probe BNC Connector, 300cm Cable for PH Meter Monitor Controller Test Sensor, Replacement Kit for Aquarium Hydroponics Plant Pool Spa (pH Electrode): Amazon.com: Industrial & Scientific
Model 8000, pH Meter with Interchangeable Electrode - PSE - Priggen Special Electronic, 114,24 €
Amazon.com : Bluelab PROBPH pH Probe for Water, Replacement Electrode for Meter, Monitor, and Controller with Easy Calibration, Tool for Hydroponic System and Indoor Plant Grow : Science Lab Ph Meters :
DIY pH Meter using Arduino and pH sensor and Calibrating it for Accuracy – Circuit Schools
How a pH probe works - YouTube
Oakton WD-35614-33 pH 150 pH, mV, Temperature Meter and Probe w/NIST
Mettler Toledo™ Temperature Probes for Benchtop pH Meter NTC30 kΩ temperature probe Mettler Toledo™ Temperature Probes for Benchtop pH Meter | Fisher Scientific