A microplate in which a plurality of wells that are reaction vessels, in a substantially concave shape, to analyze components of a specimen are arranged in matrix, includes a first surface that passes through an opening plane of the wells; and a second surface that is directed to an opposite side to the first surface. The microplate also includes a well-identification information indicator that is arranged on the second surface included in a boundary portion between wells next to each other, and that indicates well identification information to identify each of the wells. The boundary portion between the wells next to each other has a thickness substantially equivalent to a depth of the wells.
1. A microplate in which a plurality of wells that are reaction vessels, in a substantially concave shape, to analyze components of a specimen are arranged in a matrix, the microplate comprising:
a first surface comprising first portions of an opening plane of the wells different from second portions of the opening plane which are openings of the wells;
a second surface that is directed to an opposite side to the first surface; and
a well-identification information indicator that is arranged on the second surface included in a boundary portion between wells next to each other such that the well-identification information indicator is opposite one of said first portions, and that indicates well identification information to identify each of the wells, wherein
a distance from said second surface in the boundary portion of the wells where the well-identification information indicator is arranged to the first surface is substantially identical to a depth of the wells which is a distance from the bottom of wells to said first surface.
2. The microplate according to claim 1 , further comprising a center-position determining marker to determine a central position of a well near the boundary portion, the center-position determining marker arranged on the second surface included in the boundary portion of the wells next to each other.