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8177958 Electro-chemical sensor  
An electro-chemical sensor is described having one or more redox species sensitive to a certain analyte and one or more redox species that are insensitive to that analyte, for the purpose of making...
8128989 System, method, and probe for monitoring pH levels of a sample medium  
A system for monitoring a pH level of a sample medium is disclosed herein as including a pH probe having a pH-sensitive electrode, a reference electrode and a temperature electrode arranged within...
8123921 Method and device for the preparation of liquid samples in NMR spectroscopy using a combined titration and pH electrode  
A method and device have an electrode rod (1; 21) for a pH meter. The electrode rod (1; 21) has a measuring end (2; 22) for immersion into a liquid test sample (31), wherein the measuring end (2;...
8043490 Electrochemical sensor  
A combination electrode, including: A first tube; a measuring membrane, which sealedly closes the first tube to form a measuring chamber; a second tube, which surrounds the first tube and is...
8038868 Micro PH electrode (reference electrode)  
An improved combination ion-selective electrode has a thin ion-sensing body extending from an outer reference body. The exposed portion of the ion-sensing body is encompassed by a sleeve which...
8016991 Potentiometric sensor device  
A potentiometric sensor device for measuring pH value is provided, which sensor device has two electrodes situated on a substrate and applied with the aid of thick-film technology. The two...
7972495 System, method, and probe for monitoring pH levels of a sample medium  
A system for monitoring a pH level of a sample medium is disclosed herein as including a pH probe having a pH-sensitive electrode, a reference electrode and a temperature electrode arranged within...
7901555 Electro-chemical sensor  
An electro-chemical sensor is described having two molecular redox systems sensitive to the same species and having an detector to detect relative shifts in the voltammograms of the two redox systems.
7867371 Electrochemical sensor and method of manufacture  
An electrochemical sensor is provided that includes a housing defining a cavity for a reference electrolyte and defining an opening to the cavity configured to be proximate to a target fluid. The...
7837847 High purity water pH sensor with shielded flowing liquid junction  
A pH sensor is provided. The pH sensor includes a body, a glass electrode, a reference electrode and a solution ground. The glass electrode is disposed on the body to contact a liquid sample. The...
7820029 pH measurement system and method for reducing time-drift effects thereof  
A system of measuring pH of a solution having a calibration device to counteract time-drift effect. The calibration device of the system adjusts a compensation voltage to zero a measuring voltage...
7799205 Ion concentration transistor and dual-mode sensors  
An ion concentration sensor produces a signal reflective of the ion concentration within a solution. The ion concentration sensor is based on an ion sensitive transistor having a solution input, a...
7794584 pH-change sensor and method  
pH-change sensors and related methods are disclosed. One such sensor may have a first ion-sensitive transistor-operational-transconductance-amplifier (the “first IOTA”) and a second ion...
7716965 Electrochemical sensor having suspended element counter electrode and deflection method for current sensing  
An electrochemical suspended element-based sensor system includes a solution cell for holding an electrolyte comprising solution including at least one electrochemically reducible or oxidizable...
7632385 Reference electrode for potentiometric measurements, and method of monitoring the reference electrode  
A reference electrode for potentiometric measurements has a housing (2) with a hollow space (4) containing a liquid reference electrolyte (6) as well as a conductor element (8) immersed in the...
7604723 Measuring device with penetrating electrode  
The invention relates to a measuring device having a penetrating electrode. Said elongated electrode of the measuring device is movably mounted in axial direction thereof. In case of a load or a...
7553402 Method and device for developing an electrochemical measuring system  
A method and a device for developing an electrochemical measuring system, in particular a sensor, is provided. A plurality of different electrode materials are applied to at least one substrate and...
7429371 Reversible oxidation of carbon nanotubes  
Carbon nanotubes have been reversibly and readily oxidized and reduced with common chemicals in solution, thereby allowing the nanotubes to be used as catalysts for chemical reactions and as stable...
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...
7276145 PH electrode  
An object of the present invention is to suppress an electric potential drift as described above and improve pH measurement precision in order to obtain practical measurement precision in the...
7270736 Electrode system for electrochemical sensor  
The system concerns an electrode system for an electrochemical sensor, comprising, arranged on a conductive substrate (10), a plurality of micro-discs (22) electrically connected to the substrate...
7182847 System and probe for monitoring pH levels of a sample medium  
A system for monitoring a pH level of a sample medium is disclosed herein as including a pH probe having a pH-sensitive electrode, a reference electrode and a temperature electrode arranged within...
7041209 pH-sensitive amperometric biosensor  
The present invention describes a new electrochemical biosensor comprising (i) a biocatalyst producing a pH change when interacting with the analyte to be determined and (ii) a compound exhibiting...
6884332 Method and apparatus for treating an aqueous electroplating bath solution  
A method and apparatus for treating an aqueous electroplating bath solution. The method comprises continuously agitating the solution; adjusting the pH of the solution, adjusting the temperature of...
6860984 pH electrode and methods of preparing and using same  
A pH electrode having a pH-sensitive region on an electrically conductive support, said pH-sensitive region comprising a mixture ofbetween 50% and 85% of the total mixture by weight of particles of...
6841292 Hydrogen sensor for fuel processors of a fuel cell  
A method and apparatus estimate hydrogen concentration in a reformate stream produced by a fuel processor of a fuel cell. A sensor measures carbon monoxide, carbon dioxide, and water in the...
6663756 Microchip-type oxygen gas sensor based on differential potentiometry  
Disclosed is a microchip-based differential-type potentiometric oxygen gas sensor, which comprises a working electrode and a reference electrode. The working electrode is composed of a...
6653842 Galvanic probes as pH and oxidation reduction potential sensors, control devices employing such probes, and related methods  
A galvanic probe comprises a sensor electrode and a reference electrode. The sensor electrode has an exposed surface that comprises a noble metal or antimony or bismuth, and, optionally, an oxide...
6579440 Replaceable reference junction including an ion-barrier for an electrochemical sensor  
A reference junction for a reference half-cell, the reference junction including an ion-barrier membrane and being sized and shaped for removable receipt within a receptacle of a reference...
6572748 Reference electrode  
A reference electrode (1) for electrochemical measurements includes a metallic palladium-containing electrode component (3) which is covered by a layer (4) formed of or containing a palladium...
6475438 Field test apparatus for analysis of coolants and heat-exchange fluids  
A test method and apparatus for determining the content of carboxylic acid-based corrosion inhibitors in a coolant or heat exchange fluid. The amount of acidic reagent added to the coolant or fluid...
6464940 pH sensor and pH measurement method employing the same  
A pH sensor is provided capable of readily determining the pH of a solution of a small amount. The pH sensor includes a semiconductor substrate, an oxide film provided on the semiconductor...
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...
6416646 Method of making a material for establishing solid state contact for ion selective electrodes  
A polymeric material which to form a stable, reproducible interface between the ionic and electronic domains of an ion selective sensor, or an ion selective field effect transistor, or the like is...
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...
6355158 Method of measuring pH  
The present invention provides a means to substantially decrease the pH bias that is commonly observed with pH data obtained using ion selective electrode (ISE) containing instruments that have a...
6306284 Apparatus and method for monitoring fluorine ions  
An apparatus and a method for determining concentration of fluorine ions in aqueous solutions are provided. In the apparatus, a pH sensor is provided for sensing a pH value of an aqueous solution...
6299754 PH sensitive reference electrode in electrolytic desilvering  
An apparatus is disclosed for electrolytic desilvering of photographic processing solutions, more particularly fixing solutions or bleach-fixing solutions, comprising an electrolysis unit equiped...
6235491 Assay utilizing magnetic particles  
6214206 Use of a chemical sensor  
A chemical sensor (1) for selectively detecting an analyte in a solution as described. The sensor comprises a flow-through chamber (2), a selective membrane (3), a transducer means (4), an inlet...
6193865 Analytic cell  
Electrochemical cell having a porous substrate and a first and a second electrodes separated by an ion diffusion inhibiting partition is disclosed. The ion diffusion inhibiting partition between...
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...
6146514 Apparatus and method for measuring acidity  
An acidity measuring apparatus includes a measuring container for accommodating an electrolyte solution including one of a 1,2-benzoquinone derivative and a 1,4-benzoquinone derivative, an organic...
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...
6123827 Method for calibrating sensors used in diagnostic testing  
A method is disclosed for reliably calibrating a sensor used in diagnostic sensing of a predetermined parameter, e.g., CO2 partial pressure, O2 partial pressure, or pH, of a solution such as blood,...
6066249 Method for calibrating an instrument for measuring electrolytes and metabolites by analysis of blood gases  
A method for calibrating an instrument for the analysis of blood gases which possesses ion-sensitive electrodes and gas-sensitive electrodes and is used for the determination, in a biological...
6022463 Sensors with subminiature through holes  
The present invention is a sensor having an electrode formed in electrical contact with a subminiature through hole. Because of the small diameter of the through hole, the material that fills the...
5993640 Method of measuring the CaCO3 content of a scrubbing suspension, especially for a flue gas desulfurizing absorber  
The CaCO3 content of a scrubbing suspension, especially for a desulfurizing apparatus for flue gas is measured by injecting an acid into a constant mass flow of the suspension circulating along a...
5945830 Flow through fluid pH and conductivity sensor  
A sensor for measuring pH and conductivity for liquids is disclosed. The sensor includes a housing having a pH cell and a conductivity cell. A pH fluid flow path is defined between a pH cell fluid...
5921922 Measuring of bloodgases  
A method and an equipment for determining components, particularly pH, pO2 and pCO2 in blood. In order to facilitate the determination of blood gases, one sensor is used for measurement of more...
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