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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: Amazon.com: Industrial & Scientific
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Amazon.com: Atlas Scientific Gravity™ Analog pH Kit : Industrial & Scientific
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Liquid PH Value Detection detect Sensor Module Monitoring Control Board for Arduino BNC Electrode Probe Controller: Amazon.com: Industrial & Scientific
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