| 摘要 |
PROBLEM TO BE SOLVED: To improve the accuracy of the preprocessing of weighing and the working environment by inhibiting the flying up of the sample. SOLUTION: The weighing device 44 is provided with a sample supply means for supplying a sample to the extraction vessel 48, while the sample vessel 47 is tilted to the prescribed angle while rotating, a measurement means for supplying sample to the extraction vessel 48 and for measuring the sample, and the control means 44c for controlling the sample supply means so as to be a previously set weighing value. The sample vessel 48 is tilted to the prescribed angle and is rotated by the sample supply means, the sample stored in the sample vessel 47 is supplied to the extraction vessel 48 set to the measurement means, and the sample supply means is controlled so as to be the sample weighted value of the previously set weighted value, based on the measurement information. COPYRIGHT: (C)2007,JPO&INPIT
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