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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
Sensorex C110 pH/mV Checker/Simulator for pH Sensor: Science Lab Instruments: Amazon.com: Industrial & Scientific
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Amazon.com: High Accuracy pH Electrode with Calibration Powder, 0-14 pH Probe with BNC Connector & 300cm Cable for Wide Application : Patio, Lawn & Garden
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Amazon.com: Liquid PH 0-14 Value Sensor Module Accuracy 0.1pH + BNC Connect Terminal PH Electrode Probe Kit, PH Detection detect Sensor Module for Arduino : Electronics
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Myron L RPR Replacement pH/ORP Sensor: Amazon.com: Industrial & Scientific
Analog pH Meter Pro V2 Professional pH Sensor Compatible with Arduino and Raspberry Pi: Amazon.com: Industrial & Scientific
Water PH Meter 0-14 Probe BNC Connector, 300cm Cable for PH Meter Monitor Controller Test Sensor, Replacement Kit for Aquarium Hydroponics Plant Pool Spa (300cm pH Probe Electrode): Amazon.com: Industrial & Scientific
