Hitachi-high-technologies Corporation

Manabu Akiba

Ryoji Inaba

Tomohiro Shoji

Takeshi Ohura

Hiromi Yamashita

Yoshitaka Kodama

Takashi Gomi

Miho Ozawa

Mari Kotoura

The solution reservoir apparatus of the capillary electrophoresis apparatus securely affixes an evaporation-preventing membrane to a container when a capillary is inserted or withdrawn, without extending the cathode end of the capillary. The solution reservoir apparatus comprises a container for reserving a sample or solution, a cover having a bore through which the capillary is passed and covering the container, an evaporation-preventing membrane having a capillary hole through which the capillary is passed, and a container holder for holding the container. The evaporation-preventing membrane has a projection provided at the periphery of the capillary hole, the projection of the evaporation-preventing membrane is engaged with the bore on the cover when the evaporation-preventing membrane is positioned on the cover, and the evaporation-preventing membrane is supported by the cover.

Capillary electrophoresis apparatus

The invention provides a capillary electrophoresis apparatus which can improve the operability and measuring speed. According to the invention, a sensor for identifying the type of sample containers is fixed at the position away from a capillary anode electrode. The sensor is made to be closer to the sample containers by moving a moving stage so that the sample containers disposed on the moving stage can be identified by the sensor. A fixing apparatus for fixing at least a pair of sample containers is provided on the moving stage.

Even if a standby time to the measurement becomes long, a sample in a sample container is prevented from deteriorating. A cooling mechanism is provided in a sample tray for holding a sample plate, or in a plate-mounting portion of a table-type auto sampler of a capillary electrophoresis apparatus, so that the sample plate is cooled during the measurement also.

Electrophoresis apparatus using capillary array and a sample tray

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Mito, Japan

Manabu Akiba