Yokogawa Hokushin Electric Corp.

Hisayuki Ikeda

Setsuo Muramoto

Shuichi Kuze

Tamotsu Inomata

In an apparatus for conducting solubilization chromatography wherein a solvent consisting of a buffer and ionized micells is allowed to flow through a capillary tube whose both ends are connected to the plus and minus sides, respectively, of a DC source, then a sample is introduced into the capillary tube, components of the sample are separated by combination of dissolution phenomenon of the sample in the ionized micells and capillary electro-phoresis, and qualitative and quantitative analysis of the components is carried out; a three way joint is provided having a first opening connected to the capillary tube, a second opening connected to tubing for feeding the solvent and sample, and a third opening serving as a discharge outlet for residue solution of solvent and sample not introduced into the capillary tube; and means are provided for controlling the time the sample contacts an inlet of the capillary tube within the three way joint, whereby the quantity of sample introduced into the capillary tube is controlled. In another embodiment, means are provided for controlling the quantity of sample which is drawn into the capillary tube.

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Tokyo, Japan

Hisayuki Ikeda