Shimadzu Corporation

Yusuke Osaka

Yosuke Iwata

Hiroshi Ohashi

Hidetoshi Terada

Morimasa Hayashi

Minori Nakashima

A pH management system of a liquid chromatograph includes a pH meter that measures a pH value of a mobile phase in the liquid chromatograph, and a warner that presents a warning in a case where it is determined that a pH value measured in the pH meter is different from a set pH value, or that the pH value measured in the pH meter deviates from the set pH value and an error rate exceeds a predetermined error rate, when the pH value measured in the pH meter and the set pH are compared to each other.

PH management system of liquid chromatograph and computer readable recording medium recording program

A chromatographic data processing device, data processing method, and chromatographic analysis system. When chromatographic analysis is performed, the data processing device obtains 3D data for time, wavelength, and strength from the PDA, and finds the assay value for the target component in the liquid sample by processing said data. If the peak top strength of the target component falls outside of the dynamic range, a dilution ratio for the liquid sample is determined by calculating the peak top strength of the target component using the ratio of the strength at the peak top wavelength on the spectrum for each point in time belonging to the peak to the strength of a separate wavelength.

Chromatographic data processing device, data processing method, and chromatographic analysis system

A two-dimensional liquid chromatograph includes a first-dimension separation channel for guiding a sample injected from a sample injection part to a first-dimension analysis column using a first-dimension analysis mobile phase for separation; two trap columns; an analysis channel for guiding components retained in the trap columns to a second-dimension analysis column using a second-dimension analysis mobile phase for analysis; and a channel switching mechanism. The switching mechanism connects the first-dimension separation channel to one of the trap columns and connecting the analysis channel to the other of the trap columns, and also switches connections between the trap columns and the channels.

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Kyoto, Japan

Yusuke Osaka