COMBINATION pH SENSOR COMPRISING pH-SENSING METAL OXIDE COMPOSITE ELECTRODE

摘要

A combination pH sensor includes: a pH sensing composite electrode comprising a sample contact part and having metal oxide dispersed in the matrix material; a reference electrode; a wick of which one side is located on the same surface as the sample contact part of the pH sensing electrode and the other side is electrochemically connected to at least a part of the reference electrode through an electrolyte solution, and through which the electrolyte solution can move from the one side to the other side; and a sensing part including the sample contact part and a sample contact part of the wick located on the same surface as the sample contact part.