Patent ID: 8596150
Filing Date: 2013-12-03
Classification: B01F,B01L,G01N,Y10T

Abstract:
1. An analytical device rotatable about a rotation axis, comprising: a mixing cavity; a measurement cell; and a first passage that transfers a mixed liquid from the mixing cavity to the measurement cell, wherein the mixing cavity, the measurement cell and the first passage have a microchannel structure, the analytical device being configured to perform measurements on the mixed liquid in the measurement cell, the mixing cavity comprising: an inner surface including a first side wall and a second side wall generally opposite to each other, the first and second side walls being inclined toward each other with increasing distance from the rotation axis; the inner surface of the mixing cavity further including a third wall and a fourth wall generally opposite to each other and extending in the axial direction between the first and second side walls, wherein the mixing cavity is configured to mix a first liquid and a second liquid by a centrifugal force generated by a rotation of the analytical device; and a concave step formed on the third wall of the inner surface of the mixing cavity at a location closer to the rotation axis such that a first thickness of the mixing cavity at a location further away from the rotation axis is smaller than a second thickness of the mixing cavity at the concave step, wherein an inlet of the first passage is positioned at a location adjacent a radially inner side of the mixing cavity, the inlet of the first passage being positioned closer to one of the first and second side walls than the other, and closer to one of the third and fourth walls than the other.