Patent ID: 8535620

Claim:
A method of filling a liquid sample comprising: supplying the liquid sample to a first well of a biochip, the biochip includes: a substrate having a first surface on which the first well is formed, and a plurality of second wells that are formed on the first surface of the substrate, each of the plurality of second wells being, separated from the first well and including, a reagent; adhering a cover to a loop-shaped area of the substrate that surrounds the first well and the second wells so as to cover the first well and the second wells; moving the liquid sample from the first well to the second wells through a space between the cover and the substrate by rotating the biochip around a rotation axis in a state in which the biochip is arranged such that a first distance from any one of the second wells to the rotation axis in a direction perpendicular to the rotation axis is longer than a second distance from the first well to the rotation axis in the direction perpendicular to the rotation axis; and sealing the first well and the second wells by adhering the cover to the substrate, wherein in the moving the liquid sample from the first well to the second wells, the biochip is positioned such that the first surface faces the rotation axis when the biochip is rotated around the rotation axis, and in the moving the liquid sample from the first well to the second wells, the biochip is positioned such that a third distance from the first surface to the rotation axis in the direction perpendicular to the rotation axis is shorter than a fourth distance from a second surface of the substrate opposite to the first surface to the rotation axis in the direction perpendicular to the rotation axis when the biochip is rotated around the rotation axis.