| 摘要 |
PROBLEM TO BE SOLVED: To improve efficiency of an extraction work of a test body sample. SOLUTION: A rack L where a sample vessel is set is conveyed from a rack makeup part 10 to a rack storing part 40 by a conveyance line 50, and the rack L is returned around back to the rack makeup part 10 side by a circulation line 54. A makeup side rack number reading part 60 reads a rack number of the rack L conveyed by the conveyance line 50, and the read order of the rack L is memorized in a memory 72. A storage side rack number reading part 62 is arranged on the storage side, and reads a rack number of the conveyed rack L. If the rack L has a number to be stored, a control part 70 stores the rack L in the rack storing part 40, or otherwise, the control part 70 returns the rack L around back to the rack makeup side through the circulation line 54.
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