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US 2003/0143123 A1Published application
Automatic sampler
AssigneeShimadzu Corporation
InventorYoshiaki Maeda
Life of this patent
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Abstract
In a direct injection type automatic sampler, a sampling needle having a liquid sample collected from a sample vessel by using suction force of a pump is inserted into an injection port. Then, a flow path-switching valve is rotated to switch a flow path to make a flow of mobile phase liquid pass through a loop to thereby introduce the collected sample into a column. The injection port is directly incorporated in the flow path-switching valve.
Claims3
An automatic sampler comprising:
- a sampling needle for sucking in and collecting a liquid sample;
- an injection port into which said liquid sample is injected by said sampling needle;
- a flow path-switching valve for performing a flow path switching;
- and
- a pump for giving a suction force to said sampling needle, said pump being connected to both said sampling needle and said injection port by a flow path through said flow path-switching valve,
- wherein said injection port is incorporated in said flow path-switching valve.
3 more elements
Dependencies are inferred from the claim text.