Preparative fluid chromatograph device

Abstract

A fraction collector () that is provided downstream of a detector () and for separating an eluate eluted from a separation column () into a plurality of parts and collecting each of the parts into a plurality of containers respectively, and a controller () configured to execute fractionation operation for each sample injected at one time into the mobile phase are provided. In the fractionation operation, the controller detects components separated from each other in the separation column () as peaks individually based on a signal output from the detector (), and controls operation of the fraction collector () such that the components detected as the peaks are collected in different containers. The controller () is configured to set a reference number of the number of components in a sample injected into the mobile phase, to count the number of components detected as the peaks for each sample injected into the mobile phase at a time by the injector (), and to determine that the fractionation operation of the sample is completed when the number of components counted reaches the reference number and all components as many as the reference number are collected in the container.