| 摘要 |
A microchip is provided which includes a fluid circuit in which a first substrate having a groove provided on the surface of the substrate and a second substrate are bonded together. The fluid circuit includes at least a measuring portion for measuring the liquid and a flow path connected to one end of the measuring portion. The cross section of the measuring portion at the connecting position of the flow path and the measuring portion is shorter in length in the thickness direction of the microchip than the cross section of the flow path at the connecting position of the flow path and the measuring portion.
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