| 摘要 |
PURPOSE:To miniaturize the device by measuring the prescribed concentration of ion of a sample concurrently with the separate injection of the sample without providing an ion concentration measuring part separately. CONSTITUTION:A separate injector sucks a prescribed quantity of sample 3 in a sample cup 4 by means of the separately-injecting nozzle 1 and discharges the same into a reaction vessel 5. In an optional part of the separately-injecting nozzle 1 filled with the sample 3 when the prescribed quantity of the sample 3 is sucked through the nozzle 1 are embedded an ion sensor 15 having the structure of an insulation-gate type transistor with electric field effect and a reference electrode 16. The ion sensor 15 is connected to a connection terminal 15B, while the fitting part of the sensor 15 is molded by insulation resin 17. To the connection terminal 15B is fitted a connection socket 18 removably, while the reference electrode 16 is provided in such a manner that the liquid communicating part thereof contacts with the sample 3. The output corresponding to the concentration of the ion of the sample 3 detected by the sensor 15 and the electrode 16 is corrected in accordance with the measured value of a standard liquid 10 and the correct value of measurement of the sample 3 is indicated at an indicator 23. |
