Substance purification device and cartridge

Abstract

A substance purification device ensures that the interface between an aqueous liquid layer and an oil-based liquid layer is maintained in a stable manner. The substance purification device includes a washing flow channel, and an elution flow channel that communicates with the washing flow channel, the washing flow channel including a first part, and a second part that is smaller than the first part as to the cross-sectional area in a plane that is orthogonal to the direction in which the washing flow channel extends, an interface between a washing liquid and a fluid that is immiscible with the washing liquid being situated within the second part, the elution flow channel including a third part, and a fourth part that is smaller than the third part as to the cross-sectional area in a plane that is orthogonal to the direction in which the elution flow channel extends, an interface between an eluent and a fluid that is immiscible with the eluent being situated within the fourth part, the washing liquid being a liquid with which a substance-binding solid-phase carrier on which a substance is adsorbed is washed, and the eluent being a liquid with which the substance is eluted from the substance-binding solid-phase carrier.

Dependencies are inferred from the claim text.