Patent ID: 9063071
Filing Date: 2015-06-23
Classification: G01N

Abstract:
1. A multi-ion sensor adapted to measure a concentration ratio of sodium ions to potassium ions in a sample solution, comprising: a sodium ion electrode selectively reacting to the sodium ions; a potassium ion electrode selectively reacting to the potassium ions; a common electrode that is a reference electrode common to both the sodium ion electrode and the potassium ion electrode, and an microcomputer, wherein the sodium ion electrode, the potassium ion electrode, and the common electrode are provided on same support body, the common electrode does not include internal solution, and the microcomputer is structured to calculate the concentration ratio of the sodium ions to the potassium ions using a potential measured by the sodium ion electrode and a potential measured by the potassium ion electrode based on a variable A that is obtained by the following Equation (1), in Equation (1), E