公开(公告)号：US20200033302A1

公开(公告)日：2020-01-30

申请号：US15735801

申请日：2015-07-06

Applicant: SHIMADZU CORPORATION

Inventor： Kenichi YASUNAGA

IPC: G01N30/22 ,  G01N30/26 ,  G01N30/24

Abstract: An autosampler is provided with a needle, syringe pump, needle drive mechanism, sample loop, and flow path switching mechanism. The flow path switching mechanism has a plurality of solvent delivery flow paths that each deliver a different solvent, an analysis flow path that is in communication with an analysis column for separating a sample, and a plurality of connection ports to which the ends of the sample loop are individually connected, and switches, by switching the Connection state between the connection ports, to either a loading mode for connecting all the solvent delivery flow paths to the analysis flow path without interposing the sample loop or an injecting mode for interposing the sample loop between all the solvent delivery flow paths and the analysis flow path.

公开(公告)号：US20180284079A1

公开(公告)日：2018-10-04

申请号：US15936529

申请日：2018-03-27

Applicant: Shimadzu Corporation

Inventor： Kenichi YASUNAGA

IPC: G01N30/32 ,  G01N30/46 ,  G01N30/20 ,  G01N30/34

Abstract: [Purpose] To improve a throughput by shortening a time required for a series of measurements in a liquid chromatograph in which a sample is measured under a plurality of conditions by alternatively using a plurality of columns[Solving means] Provided is a liquid chromatograph including a plurality of columns 17 and 27, fluid supply units 11 and 21 each configured to feed a predetermined solution in parallel with inlet side flow paths of the plurality of columns 17 and 27, a sample injection unit 70 capable of selectively injecting a sample into one of the inlet side flow paths of the plurality of columns 17 and 27, and a flow path switching unit 100 disposed on exit sides of the plurality of columns 17 and 27 and configured to selectively connect one of outlet side flow paths of the plurality of columns 17 and 27 to a flow path connected to a detector 101 arranged on a downstream side of the flow paths switching unit 100 and connect outlet side flow paths of other columns to a waste liquid flow path.

公开(公告)号：US20180088090A1

公开(公告)日：2018-03-29

申请号：US15563425

申请日：2015-05-28

Applicant: Shimadzu Corporation

Inventor： Kenichi YASUNAGA

IPC: G01N30/24 ,  G01N1/14 ,  G01N30/04

Abstract: An autosampler is provided with a needle that has a capacity to retain a sample therein and has both ends each formed in a pointed shape, a first adapter that has an opening and causes the needle and a syringe pump to be in communication with each other through the insertion of the upper end part of the needle into the opening, and a second adapter that connects the needle and a mobile-phase liquid-delivery flow path using a structure similar to that of the first adapter. The autosampler is configured such that the first adapter and the second adapter are attached to and removed from the upper end part of the needle so as to create flow paths including the needle as necessary and carry out a sampling operation and injecting operation.