Patent ID: 8142635

Claim:
A set comprising a capillary array and a cap that is permitted to attach said cap to said capillary array when said capillary array is removed from an electrophoresis apparatus and is stored, wherein said capillary array is removably attached to the electrophoresis apparatus and includes a plurality of capillaries, each being provided with a sample injection port and an electrophoresis medium injection port, a holder portion that spreads the sample injection ports of the plurality of capillaries from one another and holds the same, a light detection portion in which a portion of the plurality of capillaries are aligned to which excitation light is irradiated, and said cap includes a container portion that contains buffer solution and a close contact making portion that closely contacts the holder portion, wherein said cap is structured to be able to accommodate the sample injection ports of the capillaries therein when the close contact making portion is closely contacted to the holder portion, and wherein the close contact making portion is a flange portion extending outward from the upper portion of the container portion.