| 摘要 |
PROBLEM TO BE SOLVED: To provide a device which increases mixture effect of solvent and to reduce noise of a result of analysis in a liquid chromatograph which analyzes a sample by using a plurality of solvent.SOLUTION: In a device provided with first and second pump units for sucking/discharging many kinds of liquid, valve means for switching the kind of liquid by opening/closing operation, and a mixing part for mixing sucked liquids, a flow rate of liquid discharged to an analyzer from one of the pump units is kept constant, and pulsation is given to the liquid after the plurality of solvent are mixed. |
