ELECTROPHORETIC MEDIUM CONTAINER

The present invention addresses the problem of providing an electrophoretic medium container capable of stabilizing a liquid delivery pressure while ensuring sealing of an electrophoretic medium. In order to resolve this problem, this electrophoretic medium container is provided with a syringe part for holding an electrophoretic medium, and a sealing component for sealing one end of the syringe part, the electrophoretic medium container being characterized in that the sealing component has a sealing surface, a body part, and a groove provided between the sealing surface and the body part, wherein the sealing surface is in contact with the inner wall of the syringe part. 本发明的课题在于，提供能够保证泳动介质的密封性并且使送液压力稳定化的泳动介质容器。为了解决上述课题，本发明的泳动介质容器构成为，具备保持泳动介质的注射筒部和密封上述注射筒部的一端的密封部件，上述泳动介质容器的特征在于，上述密封部件具有密封面、主体部、以及设置于上述密封面与上述主体部之间的槽，上述密封面与上述注射筒部内壁接触。