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7553403 |
Reversible electrochemical sensors for polyions
The present invention is directed to a reversible electrochemical sensor for polyions. The sensor uses active extraction and ion stripping, which are controlled electrochemically. Spontaneous...
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7473354 |
Recycled suppressor regenerants
A suppressed ion chromatographic apparatus using a regenerant recycle loop, comprising (a) an ion separation device, (b) a membrane suppressor, (c) a detector, (d) a container for regenerant...
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7473323 |
Method and apparatus for cleaning a milk line system
A method and apparatus for cleaning and disinfecting a milk line system and for determining the extent to which a milk line system is rinsed with a cleaning fluid, whereby in one or more places in...
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7407570 |
Disposable, self-administered electrolyte test
A disposable, self-administered electrolyte test is affixed to the label of a commercially available electrolyte supplement, is available in the pharmacy section of a retail store, or is...
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7399401 |
Methods for use in assessing a flow condition of a fluid
A device for use in assessing a flow condition of a fluid, or a fluid in a flow path, is provided. The device comprises at least one electrochemical cell, comprising a working electrode and at...
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7384523 |
Chloride ion selective membrane and sensor
A chloride selective electrode membrane comprises a polymeric matrix wherein the matrix comprises an epoxy resin, and an amine agent selected from the group consisting of polyamides, amidoamines...
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7329346 |
Ion chromatography system using catalytic gas elimination
A liquid chromatographic system is provided including catalytically combining hydrogen and oxygen gases in the chromatography eluent stream in a catalytic gas elimination chamber, to form water and...
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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...
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7270733 |
Method and apparatus for real time monitoring of industrial electrolytes
The present invention relates generally to any electrolyte and methods for monitoring the constituents contained therein. More specifically, the present invention relates to plating baths and...
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7250105 |
Measurement of substances in liquids
In accordance with the present invention a measuring device compares the current generated by two working sensor parts and gives an error indication if they are too dissimilar, i.e., the current at...
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7205099 |
Methods for studying ion channels incorporated onto a solid-supported membrane
Methods for studying ion channels comprise incorporating an ion channel onto the surface of a solid-supported membrane; applying a potential to the solid-supported membrane; and measuring an...
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7195704 |
Determination of sample volume adequacy in biosensor devices
Methods and systems are provided for determining whether a volume of biological sample is adequate to produce an accurate electrochemical analyte concentration measurement. Certain such methods and...
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7195703 |
Electrode for analytical voltammetry
An electrode for use in analytical voltammetry, wherein the electrode has a uniform composition and contains an alloy in a solid state, the alloy containing a pure metal or compound having a low...
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7101472 |
Microfluidic ion-selective electrode sensor system
Ion-selective electrode sensor systems, and methods of fabricating such systems, may be utilized to analyze microfluidic sample volumes, i.e., sample volumes on the order of 1 to 1000 microliters.
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7074318 |
Movable ionic conductive wire and method of forming an electrochemical cell
An ionic conductive wire and method of forming an electrochemical cell in which an electric insulate tube is filled with an ionic conductive material. Terminals proximate the ends of the electric...
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7063782 |
Electrochemical detection of ischemia
The subject invention comprises electrochemical methods and devices for in vitro detection of an ischemic event in a patient sample. Following addition of a known amount of a transition metal ion...
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7063781 |
Techniques for sensing chloride ions in wet or dry media
Techniques are provided for measuring chloride ion concentration in a medium. The techniques allow measurements to be made in dry or alkaline media, or both. For alkaline conditions, a sensor...
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7056431 |
Method for electrochemical analyses
Dental amalgam as an electrode material in voltammetry is provided having a very high overpotential to hydrogen. Accordingly, trace analyses can be carried out at potentials sufficiently negative...
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7048844 |
Gas sensor and method for use thereof
A sensor comprises: a pump cell comprising an inner pump electrode, an outer pump electrode, a pump cell electrolyte layer interposed between the inner pump electrode and the outer pump electrode...
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7022215 |
System and methods for analyzing copper chemistry
The present invention relates to methods for removing the matrix effects caused by variance in copper concentration and acidity during measurement of the organic additive concentration in a sample...
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6984308 |
Electrochemical analysis of coenzyme Q10 and reduced coenzyme Q10
This invention relates to an apparatus and method for the simultaneous and rapid determination of CoQ 10 and CoQ 10 H 2 concentrations in human samples using HPLC-EC. The electrochemical...
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6960287 |
Underfill detection system for a test sensor
A test sensor having a pair of electrodes and a reagent for electrochemically measuring the concentration of the analyte in a liquid sample. The test sensor comprises a capillary channel for...
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6936156 |
Automated self-calibrating water quality monitoring sensor housing assembly
An automated self-calibrating water quality monitoring sensor housing assembly includes a number of ion-selective electrodes combined in a single flow train to provide for the multi constituent...
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6913686 |
Methods for analyzing solder plating solutions
The present invention relates to methods and apparatus for determining concentrations of various inorganic or organic components in solder plating solutions, which include titration or parallel...
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6908542 |
Rotating potentiometric electrode
A rotating electrode configuration lowers the detection limits of polyion-sensitive membrane electrodes. Planar potentiometric polycation and polyanion-sensitive membrane electrodes were prepared...
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6906524 |
Electronic circuit for ion sensor
An ion sening circuit comprises a bridge sensing circuit and a differential amplifying circuit. The bridge sensing circuit detects the ion concentration of the solution in the operation mode of...
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6875337 |
Method and means for performing electrochemical analysis
The present invention concerns a method for improving the sensitivity in measurements when performing electrochemical analysis containing low metal concentrations and a means for performing...
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6856930 |
Method of determining a remaining operating time of a potentiometric measuring probe, apparatus for performing the method, and use of the apparatus
A potentiometric measuring probe contains an electrolyte ( 110 ) as well as a primary reference element ( 106 ) and a secondary reference element ( 108 ) that are arranged so that the front ( 148 )...
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6852212 |
Method and apparatus for automatic analysis
This invention relates to a method for analyzing the concentration of an analyte in a sample and to automatic analyzing apparatus. The invention will be described herein with particular reference...
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6814855 |
Automated chemical management system having improved analysis unit
A method and apparatus for measuring a target constituent of an electroplating solution using an electroanalytical technique is set forth. In accordance with the method, at least two electrodes are...
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6790341 |
Microband electrode arrays
The present invention provides microband electrode array sensors for detecting the presence and measuring the concentration of analytes in a sample. The microband electrodes of the invention have...
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6780307 |
Ion selective electrodes for direct organic drug analysis in saliva, sweat, and surface wipes
A hand-held portable drug monitoring system to detect and quantitate cocaine and other organic drugs in saliva, sweat, and surface wipes by using an ion selective electrode or an array of ion...
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6746595 |
Ammonium ionophore, an ammonium ion selective matrix, an ammonium ion-selective sensor, and a method for detecting ammonium ions in a fluid sample
An ammonium selective ionophore for use in ion selective electrodes.
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6746594 |
Miniature support for thin films containing single channels or nanopores and methods for using the same
Single-channel thin film devices and methods for using the same are provided. The subject devices comprise cis and trans chambers connected by an electrical communication means. At the cis end of...
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6736958 |
Ion sensing method
The present invention allows the determination of trace levels of ionic substances in a sample solution (ions, metal ions, and other electrically charged molecules) by coupling a separation method,...
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6699384 |
Compact electrochemical sensor system and method for field testing for metals in saliva or other fluids
Microanalytical systems based on a microfluidics/electrochemical detection scheme are described. Individual modules, such as microfabricated piezoelectrically actuated pumps and a...
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6686751 |
Method and apparatus for detecting negative ion in water
The present invention provide a method and an apparatus for detecting anions in water which does not require replacement of ion exchange resins and the like and can perform precise measurement at...
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6682647 |
Bismuth-based electrochemical stripping analysis
Method and apparatus for trace metal detection and analysis using bismuth-coated electrodes and electrochemical stripping analysis. Both anodic stripping voltammetry and adsorptive stripping...
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6673226 |
Voltammetric measurement of halide ion concentration
The concentration of chloride ion in an acid copper electroplating bath is determined from the effect that chloride exerts on the copper electrodeposition rate in the presence of organic additives....
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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...
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6596154 |
Method for regulating the sensitivity of a microsensor, and a microsensor that makes use of this method
The inventive microsensor and method for regulating the sensitivity primarily aims at measuring the nitrate concentration in a surrounding medium by use of a concept named “Migrational...
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6592737 |
Method and apparatus for determination of additives in metal plating baths
An apparatus and method for the indirect determination of concentrations of additives in metal plating electrolyte solutions, particularly organic additives in Cu-metalization baths for...
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6565983 |
Electrical contact element and use of the contact element
An electrical contact element for electrically connecting an electric device and providing current transmission in an electric device wherein the electrical contact element comprises a metallic...
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6514402 |
Sensor and method for detecting an air borne or exogenously introduced analyte
The present invention includes a method and sensor that is easy to assemble and can operate to effectively detect an air borne or exogenously introduced analyte. In one embodiment, the assembled...
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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...
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6451196 |
Ionic reservoir through application of an electrical potential
An improved membrane based biosensor incorporates sensing and reference electrodes and a dc electrical potential produced by a counter electrode. The biosensor incorporates ionophores. The...
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6432296 |
Polymeric compositions for ion-selective electrodes
Improved dry-operative ion-selective electrodes and their use are described. The dry-operative ion-selective electrodes include an internal reference electrode comprising a water-soluble salt...
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6416651 |
Multi-electrode composition measuring device and method
The Applicant's invention comprises an apparatus and method for determining the amount of one or more components in a pulping liquor. At a first electrode, a varying voltage is supplied in a...
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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...
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6409909 |
Modular sensor system for the industrial process measurement technique
A modular, in particular multidimensional system for the reagent-free, continuous detection of a substance is disclosed. The system is characterized by the presence of at least two measurements...
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