Shimadzu Corporation

Kohji Okada

Tsuyoshi Morikawa

Before start of analysis, a user inputs pipe capacity difference relative to reference pipe capacity and separation conditions, such as a mobile phase flow rate. A control unit calculates retention time shift from the pipe capacity difference and the flow rate. The control unit controls sample injection and data processing units so as to start collection of chromatogram data when a correction time has passed from the time point of sample injection in the case in which the value of the retention time shift is a positive value, and to perform sample injection when a correction time has passed from the time point at which the collection of chromatogram data is started in the case in which the value of the retention time shift is a negative value. Retention time shift caused by difference in the pipe capacity is corrected even when the mobile phase flow rate is different.

Liquid chromatograph device

A controller for controlling the operations of an autosampler, a sample push unit, and a make-up unit includes a pump stop timing setting unit for setting a first timing Tof completion of dilution of a sample, and a subsequent second timing Tof completion of trapping of a sample in the trap column, a dilution control unit for causing a solvent delivery pump for make-up of the make-up unit to operate, and for stopping operation of the solvent delivery pump for make-up at the first timing Tset by the pump stop timing setting unit, and a sample push control unit for causing a solvent delivery pump for sample push of the sample push unit to operate, and for stopping operation of the solvent delivery pump for sample push at the second timing Tset by the pump stop timing setting unit.

Sample concentration device

A liquid chromatography includes a mobile phase quantity integrator for calculating a quantity of a mobile phase used in the liquid chromatography and sent by a fluid pump after a waste fluid in a drainage reservoir has been emptied, a rinsing fluid quantity integrator for integrating a quantity of a rinsing fluid used in a sample introducing section after the waste fluid in the drainage reservoir has been emptied, and a waste fluid quantity calculation unit for calculating a quantity of the waste fluid stored in the drainage reservoir based on the quantity of the mobile phase calculated by the mobile phase quantity integrator and the quantity of the rinsing fluid calculated by the rinsing fluid quantity integrator. A display unit displays the quantity of the waste fluid calculated by the waste fluid quantity calculation unit.

Liquid chromatography

A parameter display part including a single upper-hierarchical parameter screen displaying only a selected parameter and a number of lower-hierarchical parameter screens corresponding to respective units displaying all parameters for the respective units, and providing switchable display capability. When selecting a parameter to be displayed on the upper-hierarchical parameter screen, moving the cursor to the parameter on any of the lower-hierarchical parameter screens and pressing the function key to select a display, the selected parameter is displayed on the upper-hierarchical parameter screen. When the parameter is selected again, the function key is pressed, and the display on the upper-hierarchical parameter screen is canceled.

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Kyoto, Japan

Kohji Okada