Automatic installation for liquid chromatography
    22.
    发明授权
    Automatic installation for liquid chromatography 失效
    自动安装液相色谱仪

    公开(公告)号:US4478713A

    公开(公告)日:1984-10-23

    申请号:US535308

    申请日:1983-09-23

    CPC classification number: B01D15/08 B01D15/14 B01D15/247 G01N30/24 G01N30/82

    Abstract: In the automatic installation for liquid chromatography according to the invention, the container of product to be fractionated is associated to a measuring container and is provided, as are the containers of eluents, with low level detector means; feed valves are interposed between said containers and the injection pump whereas output valves are interposed between the outlet from the column and the collector containers; a control unit comprises a safety device connected to the low level detectors to control the stoppage of the pump whenever necessary, and a control device receiving the signals from detection means connected to the output of the column and controlling the measuring container and said valves to perform successive cycles of chromatography each one including the steps of injecting a quantity of product, admitting at least one eluent and collecting the or each corresponding fraction.

    Abstract translation: 在根据本发明的液相色谱的自动安装中,要分级的产品的容器与测量容器相关联,并且与洗涤液的容器一样设置有低水平检测器装置; 进料阀介于所述容器和注射泵之间,而输出阀插入在塔的出口和收集容器之间; 控制单元包括连接到低电平检测器的安全装置,以在必要时控制泵的停止;以及控制装置,其接收来自连接到列的输出的检测装置的信号,并控制测量容器和所述阀执行 连续的色谱层析每个包括以下步骤:注入一定数量的产物,允许至少一种洗脱剂并收集或相应的部分。

    Multi-compartment filter and method of filtering using same
    26.
    发明申请
    Multi-compartment filter and method of filtering using same 有权
    多室过滤器和使用其的过滤方法

    公开(公告)号:US20050205427A1

    公开(公告)日:2005-09-22

    申请号:US11073999

    申请日:2005-03-08

    Abstract: Each embodiment includes a central sample reservoir and a plurality of satellite reservoirs. In a first embodiment, a first electrode in electrical contact with the central reservoir is charged and second electrodes in electrical contact with the satellite reservoirs are sequentially charged, thereby pI filtering molecules in the central reservoir into the satellite reservoirs. In a second embodiment, the central reservoir is configured to rotate so that molecules in a sample in the central reservoir are centrifugally pI-filtered into the satellite reservoirs. In a third embodiment, first and second electrodes proximate opposite first and second satellite reservoirs, respectively, are charged. Some molecules in a sample are pI filtered into the first and second satellite reservoirs. Third and fourth electrodes proximate opposite third and fourth satellite reservoirs, respectively, are then charged. Some molecules in a sample are pI filtered into the third and fourth satellite reservoirs.

    Abstract translation: 每个实施例包括中央样品储存器和多个卫星储存器。 在第一实施例中,与中央储存器电接触的第一电极被充电,并且与卫星储存器电接触的第二电极被顺序地充电,从而将中央储存器中的分子过滤到卫星储存器中。 在第二实施例中,中央储存器被配置为旋转,使得中央储存器中的样品中的分子被离心地pI过滤到卫星储存器中。 在第三实施例中,分别与第一和第二卫星储存器相邻的第一和第二电极被充电。 样品中的一些分子被pI过滤到第一和第二卫星储层中。 然后分别靠近相对的第三和第四卫星储存器的第三和第四电极被充电。 样品中的一些分子被pI过滤到第三和第四卫星储层中。

    Detection of ion concentration in a liquid
    30.
    发明授权
    Detection of ion concentration in a liquid 失效
    检测液体中的离子浓度

    公开(公告)号:US4590424A

    公开(公告)日:1986-05-20

    申请号:US535307

    申请日:1983-09-23

    CPC classification number: G01N27/023

    Abstract: A detector of ion concentration in a liquid is composed of a detection cell comprising a tubular piece formed from an electrically insulating material with a central passage which is fed with a liquid whose ion concentration is to be measured. A conducting coil is placed around the tubular piece, and is part of a first resonant circuit. A second reference resonant circuit is also provided, and signals of fixed frequency are applied in parallel to the two resonant circuits, and a comparator delivers a signal having a magnitude representative of the difference between the output signals from the two resonant circuits. Such a detector finds a use for example in liquid chromatography.

    Abstract translation: 液体中的离子浓度检测器由检测单元构成,该检测单元由具有中间通道的电绝缘材料形成的管状件构成,该中间通道供给被测量离子浓度的液体。 导电线圈放置在管状件周围,并且是第一谐振电路的一部分。 还提供了第二参考谐振电路,并且固定频率的信号并联施加到两个谐振电路,并且比较器输出具有表示来自两个谐振电路的输出信号之间的差的幅度的信号。 这种检测器可用于例如液相色谱法。

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