The HI7698194-2 is a replaceable galvanic dissolved oxygen membrane sensor for use with Hanna’s family of mulitparameter portable meters and probes. The sensor body is constructed of durable ABS material and contains an easily replaceable membrane cap design. The membranes are constructed of HDPE and each cap screws onto the sensor with the twist of a finger. The HI7698194-2 sensor contains a silver cathode and zinc anode. The sensor module is color coded for easy installation and integration with the probe.