A HIGH EFFICIENCY FLUORESCENCE FLOW CELL
    52.
    发明授权
    A HIGH EFFICIENCY FLUORESCENCE FLOW CELL 失效
    高效荧光FLOW CELL

    公开(公告)号:EP0717839B1

    公开(公告)日:2003-12-10

    申请号:EP94906655.9

    申请日:1994-01-12

    IPC分类号: G01N21/05 G01N21/64 G01N30/74

    摘要: A fluorescence flow cell (10) having a capillary (11) through which a sample fluid is moved, an optical source (15) that directs an exposing beam of light through the sample fluid, a collector (113) that collects fluorescent light from the exposed region of the sample and directs such collected light to a detector (114). A beam blocker (123) prevents light that is scattered by the capillary walls from reaching the detector, thereby improving the signal-to-noise ratio of the system. The beam blocker also has a pair of legs (22, 23) that prevent the sample fluid from being exposed by either the exposing light or the collected light outside of the exposing region. The structure of the components enables the various components to be quickly and accurately assembled and enables easy replacement of the capillary.

    Evaporative light scattering device
    56.
    发明公开
    Evaporative light scattering device 有权
    蒸发光散射检测器

    公开(公告)号:EP1132738A1

    公开(公告)日:2001-09-12

    申请号:EP01105606.6

    申请日:2001-03-06

    发明人: Benedict, Bart C.

    IPC分类号: G01N30/74 G01N21/47

    摘要: The present invention is directed to a device for evaporative light scattering detection that can be used for a wide range of sample types and mobile phases. The device may be quickly converted between a single flow and a split flow configuration through the use of a retractable impactor (105). The drift tube (104) of the device is in flow communication with the nebulizer (102) of the device, the drift tube (104) comprising a drain outlet (110) and the retractable impactor (105) positioned downstream in the direction of flow from the nebulizer (102).

    Photometric flow apparatus for small sample volumes
    59.
    发明公开
    Photometric flow apparatus for small sample volumes 失效
    Photometrische Durchflussvorrichtungfürkleine Probenvolumina

    公开(公告)号:EP0762119A1

    公开(公告)日:1997-03-12

    申请号:EP95113947.6

    申请日:1995-09-06

    摘要: A photometric apparatus (100) for small sample volumes comprises a cell body (102), a light input means (104) arranged adjacent to a first surface of the cell body (102), a light source (105) emitting light of predetermined wavelength or wavelength range through the light input means (104), a light output means (106) arranged adjacent to a second surface of the cell body (102) opposite to the first surface, a light detector (107) arranged adjacent to the light out put means (104), and a flow channel (108) formed in the cell body (102), wherein surfaces of the walls of the channel (108) have a roughness smaller than the predetermined wavelength.

    摘要翻译: 用于小样品体积的测光装置(100)包括电池体(102),与电池体(102)的第一表面相邻布置的光输入装置(104),发射预定波长的光的光源(105) 或波长范围,与该第一表面相对的与电池体(102)相邻的第二表面相邻布置的光输出装置(106),与该光出射相邻布置的光检测器(107) 放置装置(104)和形成在电池体(102)中的流动通道(108),其中通道(108)的壁的表面具有小于预定波长的粗糙度。

    AN HPLC LIGHT-SCATTERING DETECTOR FOR BIOPOLYMERS
    60.
    发明授权
    AN HPLC LIGHT-SCATTERING DETECTOR FOR BIOPOLYMERS 失效
    甲HPLC光散射检测器生物聚合物

    公开(公告)号:EP0505564B1

    公开(公告)日:1997-01-02

    申请号:EP92900681.5

    申请日:1991-10-23

    IPC分类号: G01N15/02 G01N30/74

    摘要: A high angle light scattering detector using classical Rayleigh scattering. A high intensity arc light source, filtered to leave only one wavelength illuminates a flow cell. Through the flow cell, very small particles such as biological proteins flow in solution after separation by HPLC or some other means. A UV detector generates data regarding the weight concentration of the eluting particles and a scattered light detector collecting scattered light at angles of approximately 90° generates a scattered light signal. The incident light intensity is also measured. The average molecular weight is then computed using the scattered and incident light data, the weight concentration data and a simplified mathematical relationship from which the size factor P and the viral coefficients have been eliminated.