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    Liquid chromatograph and analysis method using liquid chromatograph
    1.
    发明授权
    Liquid chromatograph and analysis method using liquid chromatograph 有权

    公开(公告)号：US12111297B2

    公开(公告)日：2024-10-08

    申请号：US17962474

    申请日：2022-10-08

    申请人： SHIMADZU CORPORATION

    发明人： Yuka Fujito ,  Logan Miller

    IPC分类号： G01N30/38 ,  B01D15/18 ,  G01N30/02 ,  G01N30/22 ,  G01N30/24 ,  G01N30/26 ,  G01N30/86 ,  G01N30/16 ,  G01N30/20 ,  G01N30/88

    CPC分类号： G01N30/38 ,  B01D15/18 ,  G01N30/22 ,  G01N30/8641 ,  G01N2030/027

    摘要： A controller of a liquid chromatograph is configured to execute, as an analysis operation in an analysis unit, a sample injection step of bringing a high-pressure valve into a loading state, sucking a sample from a tip of a needle to hold a sample in a sampling channel, then connecting the sampling channel to an injection port and bringing the high-pressure valve into an injecting state, and supplying a mobile phase from a liquid supplier, thereby injecting a sample held in the sampling channel into an analysis channel, and an analysis step of separating components of a sample injected into the analysis channel in a separation column by bringing the high-pressure valve in the loading state and supplying the mobile phase from the liquid supplier after the sample injection step is ended. The controller is configured to execute, as the analysis operation, a system cleaning step of cleaning a liquid flowing route.

    FLUID PORT STRUCTURE AND SAMPLE SUPPLY DEVICE
    2.
    发明公开
    FLUID PORT STRUCTURE AND SAMPLE SUPPLY DEVICE 审中-公开

    公开(公告)号：US20240319148A1

    公开(公告)日：2024-09-26

    申请号：US18607432

    申请日：2024-03-16

    申请人： SHIMADZU CORPORATION

    发明人： Shinji TANAKA

    IPC分类号： G01N30/60 ,  B01D15/14 ,  G01N30/16

    CPC分类号： G01N30/606 ,  B01D15/14 ,  G01N30/16

    摘要： A fluid port structure includes a tube and a cylindrical portion and receives injection of a fluid. The tube has sealability. A flow path through which the fluid flows is formed in the tube. In the cylindrical portion, a through hole that extends in an axial direction in which the fluid flows is formed. An upstream end portion of the tube is inserted into the through hole. An inner peripheral surface of the cylindrical portion has a tapered surface, and the more upstream a position on the tapered surface than a predetermined position in the axial direction, the larger a diameter of the portion of the through hole. The tube has a widening portion that widens along the tapered surface of the cylindrical portion in the upstream end portion.

    Chromatography system
    4.
    发明授权
    Chromatography system 有权

    公开(公告)号：US12025594B2

    公开(公告)日：2024-07-02

    申请号：US17048671

    申请日：2019-01-16

    申请人： SHIMADZU CORPORATION

    发明人： Yusuke Yokoi ,  Daisuke Kitabayashi

    IPC分类号： G01N30/30 ,  G01N30/16 ,  G01N30/32 ,  G01N30/02

    CPC分类号： G01N30/30 ,  G01N30/16 ,  G01N30/32 ,  G01N2030/027 ,  G01N2030/3084 ,  G01N2030/324 ,  G01N2030/326

    摘要： A chromatography system includes a liquid sending pump for sending a mobile phase in an analysis flow path, a sample injector that injects a sample into the analysis flow path, a separation column for separating the sample into components, a column oven for storing the separation column and adjusting a temperature of the separation column to a preset target temperature, a liquid sending controller configured to control an operation of the liquid sending pump, and a column protection flow rate setter configured to set a column protection flow rate. The liquid sending controller is configured to control the operation of the liquid sending pump such that, when the liquid sending pump starts sending the mobile phase, the flow rate of the mobile phase flowing through the analysis flow path does not exceed the column protection flow rate until a temperature in the column oven reaches the target temperature.

    Needle drive, system and method
    6.
    发明授权
    Needle drive, system and method 有权

    公开(公告)号：US11913916B2

    公开(公告)日：2024-02-27

    申请号：US17203127

    申请日：2021-03-16

    申请人： Waters Technologies Corporation

    发明人： Joshua A. Burnett ,  Rose Solow ,  David A. Simpson ,  Marc E. Lemelin

    IPC分类号： G01N30/16 ,  G01N35/10

    CPC分类号： G01N30/16 ,  G01N35/1079 ,  G01N35/1095 ,  G01N2035/1027

    摘要： A liquid chromatography sample manager includes a thermal chamber, a sample platter mounted in the thermal chamber, and a needle drive including a base having a shaft configured to rotate about a vertical axis, the base attachable to an interior of a sample manager of a liquid chromatography system. The needle drive further includes a needle assembly attached to the base, the needle assembly including a sample needle, and a drive system attached to the base, the drive system including a sample needle motor configured to impart vertical movement of the sample needle. The liquid chromatography sample manager further includes a sample delivery system configured to transfer a first sample from a first sample vial carrier located in the sample platter into a chromatographic flow stream.

    MOUNTING DEVICE FOR MOUNTING A SAMPLE SEPARATION UNIT
    7.
    发明公开
    MOUNTING DEVICE FOR MOUNTING A SAMPLE SEPARATION UNIT 审中-公开

    公开(公告)号：US20240036015A1

    公开(公告)日：2024-02-01

    申请号：US18265932

    申请日：2021-12-13

    申请人： Agilent Technologies, Inc.

    发明人： Johnny Ebsen ,  Anneke Muehlebach ,  Dirk Arheidt ,  Cathrin Sohns

    IPC分类号： G01N30/60 ,  G01N30/16 ,  B01D15/22

    CPC分类号： G01N30/6047 ,  G01N30/16 ,  B01D15/22 ,  G01N2030/027

    摘要： An installation device is for installing a sample separating device for separating a liquid sample in a sample separating tool. The installation device includes a first fluid connection for fluidically connecting to a first fluid connection point of the sample separating device, and an actuation device that can be actuated by a user for converting between an access position and a fluid coupling position. The access position makes the sample separating device accessible to the user, and the fluid coupling position fluidically couples the sample separating device. The installation device also includes a fluid coupling mechanism, which forms a force-loaded fluidic connection between the first fluid connection and the first fluid connection point when the sample separating device is converted into the fluid coupling position by the actuation device. The sample separating device may, for example, be configured for chromatography.

    Liquid chromatography multi-draw method, system and use for sampling
    10.
    发明授权
    Liquid chromatography multi-draw method, system and use for sampling 有权

    公开(公告)号：US11614428B2

    公开(公告)日：2023-03-28

    申请号：US16841369

    申请日：2020-04-06

    申请人： DIONEX SOFTRON GMBH

    发明人： Christoph Hollnagel

    IPC分类号： G01N30/24 ,  G01N30/20 ,  G01N30/46 ,  G01N30/16 ,  G01N30/60 ,  G01N30/32 ,  G01N30/02 ,  G01N30/38 ,  G01N30/36 ,  G01N30/22

    摘要： A method for collecting a sample for sample analysis includes drawing a first portion of the sample into a sample storage portion of a chromatography system while the chromatography system is in a first configuration. The method further comprising switching the chromatography system to a second configuration; sealing an end of a sample pick-up needle and draining a portion of a liquid from the second tubing; switching the chromatography system to a third configuration; drawing a second portion of the sample into the sample storage portion of the chromatography system; switching the chromatography system to an injection configuration; and fluidly connecting the sample storage portion to the chromatography column and supplying the first portion of the sample and the second portion of the sample from the sample storage portion to the chromatography column.