| 摘要 |
PURPOSE:To measure the concentration of measured ions even if interfering ions are mixed in a sample. CONSTITUTION:A measured-ion electrode 17 measuring the concentration of measured ions contained in a measured liquid 7, an other-ion electrode (interfering-ion electrode) 18 measuring the concentration of preset ions other than the measured ions contained in the measured liquid 7, and an arithmetic section (comparing arithmetic section) 5 calculating the concentration of the measured ions contained in the measured liquid 7 based on the measured values of the other-ion electrode 18 and the measured-ion electrode 17 are provided. |
