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1. 发明授权

US3875037A Electrode structure 失效
公开(公告)号：US3875037A
公开(公告)日：1975-04-01
申请号：US44348574
申请日：1974-02-19
申请人： BECKMAN INSTRUMENTS INC
发明人： KRULL IRWIN H
IPC分类号： G01N27/49 , G01N27/46
CPC分类号： G01N27/404
摘要： An electrode structure having a generally tubular body terminating in a generally cup-shaped end with an axially extending aperture. An insert is provided, the insert having a circumferential shoulder for engaging a circumferential detent within the open end of the body, the engagement being accomplished by providing a plurality of axially extending slots about the periphery of the open end, the fingers so formed deforming under pressure of insertion of the insert until the shoulder engages the detent means. A cap is provided to cover the open end of the tubular body in closing mating relationship to maintain the engagement of the shoulder within the detent. The aperture is closed by means of a membrane in sealing relation with an electrode extending through the insert.

3. 发明授权

US3706649A Electrochemical electrode 失效
标题翻译：电化学电极
公开(公告)号：US3706649A
公开(公告)日：1972-12-19
申请号：US3706649D
申请日：1970-06-29
申请人： BECKMAN INSTRUMENTS INC
发明人： COSGROVE RICHARD E , KRULL IRWIN H , MASK CHARLES A
IPC分类号： G01N27/333 , G01N27/46
CPC分类号： G01N27/3335 , G01N2410/10
摘要： AN ELECTROCHEMICAL ELECTRODE FOR MEASURING THE ION CONCENTRATION OR ACTIVITY OF SOLUTIONS. THE ION SENSITIVE BARRIER OF THE ELECTRODE CONTAINS A MACROCYCLIC COMPOUND, MINERAL OIL, AND A SUFFICIENT AMOUNT OF A COMPOUND LIPID TO RENDER THE BARRIER SUBSTANTIALLY SOLID. PREFERABLY, AN AROMATIC COMPONENT IS INCLUDED IN THE BARRIER TO PROVIDE LONG TERM STABILITY OF THE BARRIER. THE MACROCYCLIC COMPOUND IS PREFERABLY VALINOMYCIN WHEN THE ELECTRODE IS TO BE UTILIZED FOR SELECTIVELY MEASURING THE POTASSIUM ION ACTIVITY OF SOLUTIONS, AND IS PREFERABLY NONACTIN WHEN THE ELECTRODE IS TO BE UTILIZED FOR SELECTIVELY MEASURING THE AMMONIUM ION ACTIVITY OF SOLUTIONS.

4. 发明授权

US3617460A Electrode assembly 失效
公开(公告)号：US3617460A
公开(公告)日：1971-11-02
申请号：US3617460D
申请日：1969-12-17
申请人： BECKMAN INSTRUMENTS INC
发明人： KRULL IRWIN H , MASK CHARLES A
IPC分类号： G01N27/333 , G01N27/46
CPC分类号： G01N27/3335
摘要： An electrochemical electrode assembly for making ion concentration measurements in which a capillary tube open at its rear end and closed by an ion-sensitive barrier at its forward end is removably mounted in a tubular electrode body. A conductor fixedly mounted at the rear end of the tubular body extends through the open rear end of the capillary tube for connection to an internal half cell immersed in electrolyte in the tube. Due to the surface tension of the electrolyte on the wall of the capillary tube, the electrolyte will not escape through the open end of the tube during normal handling of the electrode assembly. In one embodiment, an organic ion exchanger liquid is provided in the capillary tube between an ion-permeable membrane at the forward end of the tube and the electrolyte in which the half cell is immersed. The surface tension of the two liquids on the wall of the capillary tube ensures that the ion-exchanger liquid will not be displaced by the electrolyte and, therefore, the ion exchanger will remain in contact with the membrane.

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