Liquid feeding unit, and liquid chromatography analysis system and control method thereof
AssigneeShizadzu Corporation
InventorKosuke NAKAJIMA
Life of this patent
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Abstract
A first solution is supplied from a first pump. A second solution is supplied from a second pump. A flow path from the first pump and the second pump to a column is switched between a first flow path and a second flow path. In the first flow path, a first mixer is located upstream of an injection part for a sample, and the second mixer is located downstream of the injection part. In the second flow path, the first mixer and the second mixer are located upstream of the injection part. The first flow path is formed in a first mode in which the sample is diluted before introduction into the column. The second flow path is formed in a second mode in which the sample is not diluted before introduction into the column.
Claims10
A liquid feeding unit that feeds a first solution and a second solution as a mobile phase to a column of a liquid chromatography analysis system,
- the first solution being supplied from a first pump,
- the second solution being supplied from a second pump,
- the liquid chromatography analysis system including an injection part into which a sample is injected,
- the liquid feeding unit comprising:
- a first mixer;
- a second mixer;
- and
- a switch device that switches a flow path from the first pump and the second pump to the column between a first flow path and a second flow path, wherein
- the first mixer and the second mixer are included in each of the first flow path and the second flow path,
- in the first flow path, the first mixer is located upstream of the injection part, and the second mixer is located downstream of the injection part,
- in the second flow path, the first mixer and the second mixer are located upstream of the injection part,
- the switch device forms the first flow path as the flow path in a first mode in which the sample is diluted before introduction into the column, and
- the switch device forms the second flow path as the flow path in a second mode in which the sample is not diluted before introduction into the column.
A liquid chromatography analysis system that uses a first solution and a second solution as a mobile phase, the liquid chromatography analysis system comprising:
- a column;
- a first pump that supplies the first solution;
- a second pump that supplies the second solution;
- a sampler that injects a sample toward the column;
- a first mixer;
- a second mixer;
- and
- a switch device that switches a flow path from the first pump and the second pump to the column between a first flow path and a second flow path, wherein
- the first mixer and the second mixer are included in each of the first flow path and the second flow path,
- in the first flow path, the first mixer is located upstream of an injection part into which the sample is injected by the sampler, and the second mixer is located downstream of the injection part,
- in the second flow path, the first mixer and the second mixer are located upstream of the injection part,
- the switch device forms the first flow path as the flow path in a first mode in which the sample is diluted before introduction into the column, and
- the switch device forms the second flow path as the flow path in a second mode in which the sample is not diluted before introduction into the column.
Dependencies are inferred from the claim text.