摘要 |
A chamber chip 17 is provided with a pre-branching chamber 21, branching chamber 22, and a guiding fluid passage 24 for these chambers 21. The branching chamber 22 has a separation wall 23 which defines two branching compartments 29A and 29B. A wall surface of the branching chamber positioned at a side of the rotary shaft 13 has a spread angle &thetas;e from an outlet end section 24b of the guiding fluid passage 24 which is an obtuse angle. The rotation of the chamber chip 17 about the rotary shaft 13 causes a liquid 23 to flow from the pre-branching chamber 21 through the guiding fluid passage 24 into the branching chamber 22. By a Coriolis force acting in an opposite direction to a rotation direction R1, R2 about the rotary shaft 13, the liquid 23 is selectively supplied to any one of the branching compartments 29A and 29B.
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