Patent ID: 7722753

Claim:
An electrophoresis plate for separating a sample, comprising: a substrate having a first end and a second end; a plurality of separation channels provided in the substrate as one group, each of the separation channels consisting of one channel, and arranged along a surface of the substrate without intersecting other separation channel; first separation channel openings provided at the respective separation channels on the first end of the substrate in a matrix pattern as sample inlet ports for receiving an injected sample from wells of a sample plate, the sample inlet ports having a pitch equal to a pitch of the sample plate wells; second separation channel openings provided at the separation channels in said one group on a side of the second end of the substrate along a linear region in a direction substantially orthogonal to a longitudinal direction of the separation channels; and bent portions provided at the second end and connected to approximately half of the separation channels in said one group, said half of the separation channels with the bent portions having their sample inlet ports located nearer to the second end, and connected to the second separation channel opening so as to reduce a difference of channel lengths relative to the separation channels without the bent portions in said one group.