Analysis apparatus having a plurality of liquid chromatographs and its analysis method

Abstract

The present invention makes it possible to realize an analysis apparatus having a plurality of liquid chromatographs capable of judging separation performance and the like at the right timing and improving analysis performance early. Analysis starts and a mixed sample is prepared by adding a non-retaining ingredient to a measurement object sample and is introduced into an analysis flow path (Sto S). The mixed sample is separated into components by a separation column, the components are outputted as chromatogram data by a detector, and the analysis finishes (Sto S). Retention time and peak information are acquired from the chromatogram outputted from the detector, whether or not a measurement result is within an allowable range is judged, and the process shifts to next analysis when the measurement result is within the allowable range (Sto S). An amount of transit time tof a non-retaining ingredient shifted from an allowable value is confirmed when separation performance is outside an allowable range at step Sand a separation column replacement instruction is outputted to an output unit when fluctuation of the transit time tis within an allowable range (S, S). A device maintenance instruction is outputted to the output unit when the fluctuation is outside the allowable range at step S(S).