ELECTROLYTE MEASUREMENT DEVICE AND METHOD FOR DETERMINING ABNORMALITY OF ELECTROLYTE CONCENTRATION MEASUREMENT UNIT

The present invention is provided with an electrolyte measurement unit 11, a second measurement unit for performing measurement of a different measurement item to the electrolyte measurement unit 11, a sampling mechanism 5 for dispensing a sample to the electrolyte measurement unit 11 or the second measurement unit, and a control unit 13 for controlling the operation of respective devices. When the sample is dispensed to the second measurement unit by the sampling mechanism 5 or measurement of the sample is performed by the second measurement unit, the control unit 13 measures the potential in a state in which ion-selective electrodes 104, 105, and 106 are filled with an internal standard liquid, and determines, on the basis of measured data, whether or not there is an abnormality in the electrolyte measurement unit 11. An electrolyte analysis device capable of sensing an unstable state at an early stage, and a method for determining an abnormality in an electrolyte concentration measurement unit, are thereby provided.