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7628901 Reference electrode, salt bridge and ionic concentration measuring device by the use of reference electrode and salt bridge  
The present claimed invention is to provide a reference electrode wherein variations of a potential difference at a liquid junction can be removed almost completely, contamination of a sample...
7547379 Responsive glass membrane for ion selective electrode and ion selective electrode  
The present claimed invention intends to provide a responsive glass membrane for ion selective electrode glass and an ion selective electrode comprising the responsive glass membrane that produces...
7318273 Method for producing pH probes  
A method for producing a pH measuring probe includes: providing an electrode wire protruding out of both sides of a recording device, the electrode wire being fixed to the recording device with the...
7314541 Ion measuring composite electrode  
The present invention provides an improved ion measuring composite electrode, measuring instrument incorporating the composite electrode, and a manufacturing method for forming a preform of a...
7291496 Ultrasensitive biochemical sensor  
An electronic sensor is provided for detecting the presence of one or more analytes of interest in a sample. The sensor preferably comprises a field effect transistor in which conductance is...
7189315 Ion sensor and clinical analyzer using the same  
An ion sensor has a flow path through which a sample flows. An ion-exchange membrane is in contact with the sample in the sample flow path. An internal solution is provided on one side of the...
7067343 ISFETs fabrication method  
Methods for fabricating ion sensitive field effect transistors (ISFETs) with SnO 2 extended gates. A SnO 2 detection film is formed on a substrate by sol-gel technology to serve as an extended...
6793787 Ion-selective electrode  
An improved ion-selective electrode with enhanced sensitivity and reliability. The electrode is readily formed from an electrode assembly sealingly joined to the upper end of an electrode chamber...
6495012 Sensor for electrometric measurement  
The invention provides a sensor with a reference electrode and a flowing electrolyte which is particularly useful for measuring the ion concentration of a process solution. The invention includes a...
6419809 Miniature reference electrode  
A miniature reference electrode with improved stability and durability formed of a miniature silver/silver chloride reference electrode with high stability and general applicability as a reference...
6416653 Device for separating electrolyte chambers within an electrochemical sensor  
The present invention is drawn generally to an improved electrochemical sensor. The reference cell within the sensor can be a salt bridge comprising at least two chambers for containing an...
6398931 Combination ion-selective electrode with a replaceable sensing membrane  
An improved combination ion-selective electrode apparatus is provided that comprises an electrode body, a reference electrode, and an ion-sensing electrode. The reference electrode comprises a...
6395158 PH sensor with electrical noise immunity  
A sensor for measuring pH of a solution includes a housing with an exterior surface for exposure to the solution. A measuring glass electrode within a tubular circuit ground electrode extends...
6322680 Universal ion-selective meter  
The proposed multipurpose ion-selective sensor is designed to be operational in any spatial position in harsh environment and incorporates a housing tube (1) where a number of elements are fixed...
6221222 Reference electrode solution containing organic ammonium and phosphonium salts for potentiometric measurement of pH  
The present invention provides a reference electrode solution containing ammonium salts and phosphonium salts for the potentiometric measurement of pH and method of using the same. The use of the...
6168707 Ion measurement apparatus and methods for improving the accuracy thereof  
The accuracy and temperature-independence of ion-selective electrode meters having a logarithm resistance temperature correction incorporated therein is enhanced by using a microprocessor...
6162337 Large area ion concentration measuring electrode and method of manufacturing same  
An ion concentration measuring electrode unit includes a body member having a plurality of capillary tubes extending through the body member to provide a plurality of passageways for a sample fluid...
6139707 pH electrode arrangement  
A pH electrode arrangement comprises an inner wire electrode of silver sulfide, and a fill solution comprising a solution of sodium thiosulphate, a buffer, and an antioxidant. The arrangement has a...
6068745 Method for forming an electrochemical sensor  
A method of producing a medium-tight connection between interior and exterior concentrically-arranged glass tubes includes the steps of providing a longitudinally extending electrical conductor...
6033543 Electrochemical sensor  
A method of producing a medium-tight connection between interior and exterior concentrically-arranged glass tubes includes the steps of providing a longitudinally extending electrical conductor...
5980712 Single-rod measuring element for electrochemical measurements  
A single rod measuring probe has a hollow probe portion which contains an electrolyte solution and an electrical connector plug. The hollow probe portion and electrical connector plug are joined by...
5942388 Electrobiochemical method and system for the determination of an analyte which is a member of a recognition pair in a liquid medium, and electrodes thereof  
An elcctrobiochemical system for the determination of the presence and optionally concentration of an analyte in a liquid medium, the system comprising an electrode having immobilized thereon a...
5939610 Ion concentration measuring apparatus with internal calibration fluid reservoir  
An ion concentration measuring apparatus having a housing member with a measuring electrode assembly movably mounted within the housing member is provided. A calibration fluid reservoir is also...
5837113 Small glass electrode  
A small glass electrode and process for preparation thereof, the small glass electrode having a bonded structure and comprising a reference electrode composed of silver/silver chloride, a glass...
5766432 Method and device for eliminating electrode drift  
A pH-measuring method and device for monitoring and then correcting for electrode drift is provided. The device includes a pH-measuring electrode and more than one reference electrode. During...
5660741 Process for preparation of small glass electrode  
A small glass electrode and process for preparation thereof are disclosed. This small glass electrode is characterized in that said glass electrode, which has a bonded structure comprises a...
5658451 Method for calibration of a pH measuring element  
In a method for calibration of a pH measuring element whose ion-permeable, hydrophilic polymer layer is brought into contact with an aqueous solution prior to calibration, the aqueous solution is...
5582699 pH glass electrode  
In the pH glass electrode comprising a double-walled glass tube in which an electrical screen is provided between the walls, the inner glass tube is sealed at one end with a glass lid and at the...
5522978 Monensin amides for sodium-selective electrodes  
This invention relates to sodium-selective agents which are monensin amide derivatives and sodium-selective electrodes having sodium-selective membranes containing such monensin amide derivatives....
5466348 Methods and devices for enhanced biochemical sensing  
A method and application for detecting and measuring the presence of a binding target material employs a semiconductor device having a receptor-covered surface topgate, separated by a dielectric...
5419826 Ion-selective reference probe  
An ion-selective reference probe which is adapted for use with potentiomec measurement systems is disclosed. The reference probe is non-chloride based and employs a specially adapted electrolyte...
5397452 Reference electrode  
A reference electrode including a body, a supply of flowable gel electrolyte, a wire electrode, and a tube for the electrolyte. The electrolyte is preferably contained in a cartridge within the...
5366936 Chalcogenide ion selective electrodes  
A novel series of chalcogenide glass compositions that are relatively highly selective for a specific ion in solution. When utilized as a sensing element for electrodes or similar analytical...
5346606 Electrochemical sensor  
An electrochemical sensor wherein the salt bridge is a unitary plug of semipermeable material which is saturated with an electrolyte. The plug has a spiral cut from its outer surface to the central...
5326452 Glass electrode  
The glass electrode comprises a membrane of ion sensitive glass. The membrane comprises a composite material consisting of a matrix of ion sensitive glass and a dispersed filling material therein...
5310473 Removable sample testing member for use in measuring ion concentration  
An improved compact ion-concentration measuring apparatus having a removable sample testing module with gelatinized electrodes. The gelatinized portion of the electrodes can be formed with a jelly...
5185072 Ion-selective electrode and method of producing the same  
An improved ion-selective electrode assembly and method of preparing the same includes providing a substrate of an insulating material which has a laminated polyethylene terephthalate film layer...
5147524 pH sensor  
A pH sensor includes a unitary cylindrical semi-porous plug which is formed with a central bore and is also formed with a cavity near a first end of the plug. A pH electrode is positioned in the...
5132001 Hemispherand ionophores having increased lipophilicity  
Sodium ion selective compositions which comprise an ion carrier, a compound capable of solvating the ion carrier, and a supporting matrix are disclosed. The ion carriers of this invention are...
5118628 Method for analyzing water and apparatus to carry out this method  
A method for analyzing water or other liquid, in particular rain water, comprises the steps of providing a collector comprising at least first and second volumetric cells and a mechanism for...
5103179 Water analyzer with multiple electrodes  
A water analyzer having several electrodes of the type which normally interfere with one another. These electrodes include a first electrode which is an active measurement electrode which perturbs...
5096565 Safe failure ion selective combination electrode  
A safe failure ion selective combination electrode in which a signal unit provides a signal if combination electrode output falls outside a predetermined range.
4981572 Electrode unit and package for a blood analyzer  
An electrode unit for use in an analyzer of blood and of liquids includes a cylindrical outer housing having open ends and a pair of top hat end plate bushings each having a central bore and a plug...
4889611 Flow cell  
An ion selective electrode flow cell includes a first fluid conduit and at least two ion sensing electrodes each having ion sensing surfaces disposed within the first fluid conduit. A second fluid...
4888102 Electrolytic cell with reference electrode  
A reference electrode device is provided for a high temperature electrolytic cell used to electrolytically recover uranium from spent reactor fuel dissolved in an anode pool, the device having a...
4888154 Combination structure for sampling the contents of a reactor vessel including pH monitoring means  
A device capable of being mounted in a small opening in a reactor vessel, after having been inserted through a manway, which permits the continuous sampling of the contents of the reactor during a...
4874499 Electrochemical microsensors and method of making such sensors  
Electrochemical microsensors formed of a substrate containing means for sensing potential or current, including active and passive electronic devices and electronic circuits, and a micromachined...
4872966 Sheet type electrode for use in the measurement of ion concentrations  
An improved electrode assembly of a modular configuration for sensing ion concentration includes a substrate mounted in a housing and being sandwiched by a first and second support layer of...
4816132 Sheet type electrode  
A flat shaped composite electrode includes a flat substrate having a high electrical insulating property. A flat inside pair of electrodes and a flat outside pair of electrodes are fixed on the...
4814062 Membrane reference electrode  
A reference electrode utilizes a small thin, flat membrane of a highly conductive glass placed on a small diameter insulator tube having a reference material inside in contact with an internal...
Matches 1 - 50 out of 252 1 2 3 4 5 6 >