DUAL ONLINE LIQUID CHROMATOGRAPHY DEVICE AND CONTROL METHOD THEREOF

摘要

A dual online liquid chromatography device according to an embodiment of the present invention comprises: a first pump for injecting a first solvent or a mixed solution containing the first solvent and a second solvent; a second pump for injecting the first solvent or the mixed solution containing the first and second solvents; a specimen intake valve connected to the first pump and a specimen injector for injecting a specimen; a column selection valve connected to the second pump and the specimen intake valve; and a dual column valve including a plurality of ports, one side of which is connected to the column selection valve and an opposite side of which is connected to a first column and a second column. The dual online liquid chromatography device, according to the embodiment of the present invention, can continuously perform an analysis without an effect of dead time during which analysis data cannot be obtained in the process of equilibrating a column in the related art.