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    • 3. 发明授权
    • Capillary syringe
    • 毛细管注射器
    • US5770158A
    • 1998-06-23
    • US661310
    • 1996-06-13
    • Kathleen A. EischenJames W. Kenney
    • Kathleen A. EischenJames W. Kenney
    • B01L3/02
    • B01L3/022Y10T436/2575
    • A disposable, vented capillary draw device is described that is also capable of use for the syringe pressurized dispensing of liquid benignly drawn. The system includes a vented capillary collection tube for drawing liquid samples by capillary rise in a bubble-free manner. A reversible, positive vent shut-off is provided to help contain the drawn material in the capillary. A reciprocating, loose fitting, syringe plunger arrangement is also provided attached to and operable in the capillary tube. Initial axial displacement of the plunger in the capillary toward the open end is used to initially operate the vent seal or positive vent shut-off device to close the vent and, upon further advancement of the plunger, the plunger forces the liquid material back out of the draw tube.
    • 描述了一次性通气毛细管牵引装置,其也可以用于注射器加压分配液体,其被良好地拉伸。 该系统包括通气毛细管收集管,用于以无气泡的方式通过毛细管上升来抽取液体样品。 提供可逆的正通气关闭以帮助容纳毛细管中的拉伸材料。 往复式,松散配合的注射器柱塞装置也被附接到毛细管并在毛细管中可操作。 柱塞在毛细管中朝向开口端的初始轴向位移用于初始操作通气密封或正通气关闭装置以关闭通气口,并且在柱塞进一步前进时,柱塞将液体材料重新排出 牵引管。
    • 6. 发明授权
    • Reference electrode
    • 参考电极
    • US5384031A
    • 1995-01-24
    • US980086
    • 1992-11-24
    • Carter AndersonKee V. Sin
    • Carter AndersonKee V. Sin
    • G01N27/28G01N27/30G01N27/333G01N27/401
    • G01N27/301
    • A reference electrode system for a disposable test cell which provides both a reference electrical potential and a liquid junction between the reference medium and an analytic or sample medium to which a sample is introduced to be tested includes a substrate carrying and supporting a thin metallic electrode layer, an hydrophilic medium overlays the electrodes, a portion connecting the metallic layer and the sample conducting medium to provide an electrical connection and free diffusion liquid junction with the sample medium, a liquid impermeable dielectric barrier layer sealing all but a selected, relatively minor portion of the hydrophilic medium exposed to contact the analytic medium. Electrolyte salts introduced into the free diffusion channel control both the reference electrode potential and the junction potential.
    • 用于一次性测试电池的参考电极系统,其提供参考电位和参考介质与待测试样品所引入的分析或样品介质之间的液体接头,包括承载和支撑薄金属电极层的基板 ,亲水介质覆盖电极,连接金属层和样品导电介质的部分,以提供与样品介质的电连接和自由扩散液体接合;液体不可渗透的介电阻挡层,除了所选择的较小部分 暴露于亲水介质接触分析介质。 引入自由扩散通道的电解质盐控制参考电极电位和结电位。