PROBLEM TO BE SOLVED: To provide a moisture measuring coulometric titrator which can automatically inject a batchwise sample in succession and continuously perform a larger number of measurements in the moisture measuring coulometric titrator for measuring the moisture content of a liquid sample by a Karl Fischer method.;SOLUTION: The moisture measuring coulometric titrator includes a reagent circulating line for circulating a reagent into a titration cell (1), a metering pipe (6) for sampling a definite amount of a sample, a sample supply line for passing the sample through the metering pipe (6), and a flow channel switching valve (5). The flow channel switching valve (5) is constituted so as to switch a sample injecting flow channel wherein the metering pipe (6) is incorporated in the sample supply line and a moisture measuring flow channel wherein the metering pipe (6) is incorporated in the reagent circulating line and a gas supply line [flow channel (46)] for supplying a moisture non-containing pushing-out gas when batchwise measurement is completed is connected to the reagent circulating line [flow channel (41)] and constituted so as to recover the reagent in the metering pipe (6) in the titration cell (1) by the pushing-out gas.;COPYRIGHT: (C)2010,JPO&INPIT
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