| 摘要 |
PURPOSE:To efficiently supply a degassed solvent to a liquid chromatograph apparatus without varying the pressure of dissolved He-gas, by bringing a container to a hermetically closed state when the degassed solvent is preserved and keeping the pressure of the He-gas in the container constant when the solvent is discharged and supplied. CONSTITUTION:The titled apparatus is constituted of a container 2 equipped with a gas exhaust pipe 6 and storing a mobile phase solvent, the bubbling He-gas supply pipe 3 inserted in the stored solvent of the container 2, a suction supply pipe 4 capable of discharging and supplying the solvent to the outside of the container 2, the pressure sensor 5 provided to the gaseous phase part in the container 2 and solenoid valves 32, 61 provided to the gas exhaust pipe 6 and the He-gas supply pipe 3. In a degassing process by a control part 7, the mobile phase solvent before degassing is degassed by He-gas by opening the solenoid valves 32, 61 and, after degassing, the solenoid valves 32, 61 are closed to preserve the degassed solvent. In a pressure control process, the solenoid valve 32 of the He-gas supply pipe 3 is appropriately opened in order to keep the pressure of the gaseous phase part in the container constant on the basis of the sensor 5 when the degassed solvent is discharged outside the container. |
