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8890216 Methods and apparatus for measuring analytes using large scale FET arrays  
Methods and apparatus relating to very large scale FET arrays for analyte measurements. ChemFET (e.g., ISFET) arrays may be fabricated using conventional CMOS processing techniques based on...
8548772 Automated method and apparatus for detecting erroneous sample collection in clinical assays  
An automatic method for identifying biological samples that are collected using the wrong blood preservative for subsequent analytical testing. The method also provides for identification and/or...
8496800 Use of polyoxyalkylene nonionic surfactants with magnesium ion selective electrodes  
Methods are disclosed for reducing the shift in EMF bias in a magnesium ion selective electrode, comprising the step of: contacting the electrode with a composition comprising a polyoxyalkylene...
8486256 Electrochemical technique to measure concentration of multivalent cations simultaneously  
Methods and systems for simultaneously measuring concentration of two or more different cations in solution. The methods include the steps of applying a steady state polarization technique to a...
8298399 Method, device and system for the microanalysis of ions  
A method of microanalyzing ions, which includes: placing in a cavity having an internal volume, a volume of an ionic liquid that is smaller than the internal volume; placing in the cavity a...
8268162 Voltammetric device having sample degassing system  
A system and method for voltammetric analysis of a liquid sample solution.
8265904 Automated methods for detecting sample collection with erroneous anticoagulant in clinical assays  
An automatic method for identifying biological samples that are collected using the wrong blood preservative for subsequent analytical testing. The method also provides for identification and/or...
8097148 Method for ultrasonic cleaning of a working electrode in electrochemical cell useful for automated trace metals measurement  
Methods for cleaning and regenerating a working electrode in an electrochemical cell; method for measuring the concentration of a metal in a liquid sample in an electrochemical cell having a...
8097135 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...
8070935 Apparatus for analyzing tin compounds in liquid samples and method for analyzing tin levels using the same  
An apparatus for a continuous, automated quantitation of tin compounds in liquid samples and a method for quantitative analysis based on the said apparatus are provided herein. The inventive...
8016998 Electrochemical detection of arsenic  
Electrochemical methods and materials for the detection of arsenic. In one aspect, arsenic is detected using a working electrode comprising particulate platinum. In another aspect, arsenic is...
7988876 Method for reducing and homogenizing the thickness of a semiconductor layer which lies on the surface of an electrically insulating material  
To reduce and homogenize the thickness of a semiconductor layer which lies on the surface of an electrically insulating material, the surface of the semiconductor layer is exposed to the action of...
7897032 Method and apparatus for stripping voltammetric and potentiometric detection and measurement of contamination in liquids  
A sampling system for measuring the presence and concentration of inorganic ion species, including, metals, metalloids and non-metals, in a liquid solution including a first sampling unit. The...
7883617 Electrochemical analysis method using boron-doped electroconductive diamond electrode  
This invention provides an electrochemical analysis method for accurately detecting a harmful substance such as arsenic contained in a solution. In the electrochemical analysis method, a working...
7799204 Voltammetric Ion Sensor  
A method and device for the quantitative determination of an ion in a fluid which comprises subjecting the fluid to voltammetry using a sensing electrode which comprises an electrically conducting...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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.
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...
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...
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...
6372105 Apparatus for measuring a silver or halogen ion concentration  
A method of producing a silver halide photographic emulsion in which a silver ion concentration in precipitation of a silver halide emulsion in a precipitation bath is controlled, wherein a...
6306283 Method for screening chemical sensitizers  
A method of screening a water soluble gold complex for use as a sensitizer in a silver halide photographic element comprised of experimentally measuring the electrochemical potential of the gold...
6280602 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...
6197172 Electrochemical sensor with gelled membrane and method of making  
An electrochemical sensor with a gelled membrane for prolonging the useful life of an ion-selective electrode. The gelled membrane is a hydrophilic membrane having a specially-formulated gel layer...
6193864 Locking sensor cartridge with integral fluid ports, electrical connections, and pump tube  
A blood analyzer sensor cartridge comprises a housing having chamber and a sensor assembly within the chamber, a first fluid port having an articulated inlet aspiration tube for direct...
6190520 Impurity measuring device  
A first solution is brought into contact with a surface of a sample so that impurities, which exist in the sample or on the surface of the sample, and the sample are dissolved in the first...
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...
6146510 Sensor cartridge for a fluid analyte analyzer  
The present invention is a sensor formed over a subminiature through hole. Because of the small diameter of the through hole, the material that fills the through hole and the through hole itself...
6117304 Electroanalytical voltammetric cell  
PCT No. PCT/EP96/01795 Sec. 371 Date Mar. 2, 1998 Sec. 102(e) Date Mar. 2, 1998 PCT Filed Apr. 30, 1996 PCT Pub. No. WO96/35118 PCT Pub. Date Nov. 7, 1996An electroanalytical voltammetric cell...
6090269 Determination of chromium  
A highly sensitive assay for the determination of Cr(VI), in the presence of Cr(III) and in the presence of other cations by cyclic voltammetry. The determination is carried out with a gold or...
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...
6022470 Electroanalytical, dropping mercury electrode cell  
The electroanalytical, voltammetric cell includes a cell body housing, in addition to a reference electrode, a working electrode and, in its lowermost portion, a counter-electrode. An arrangement...
5958201 Sodium ion-selective-electrode membrane having extended uselife  
A method for extending the uselife of a sodium ion selective membrane of an ISE sensor by incorporating water therein. Also provided are polymer compositions comprised of water plus the membrane...
5942103 Renewable-reagent electrochemical sensor  
A new electrochemical probe(s) design allowing for continuous (renewable) reagent delivery. The probe comprises an integrated membrane-sampling/electrochemical sensor that prevents interferences...
5916425 Electronic wiring substrate with subminiature thru-holes  
The present invention is an electronic wiring substrate for sensors formed over a subminiature through hole. Because of the small diameter of the through hole, the material that fills the through...
5914607 Apparatus and methods for analyzing a sample solution, including first and second ion detectors  
A sample solution contained in a sample vessel is analyzed using a positive ion detector and a negative ion detector. The positive ion detector and the negative ion detector are supplied with the...
5911862 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...
5891322 Electroanalysis process using potentiometry with coulometric stripping (elution)  
Electroanalysis of an electroactive, and especially ionized, species, in trace form, in a liquid sample, is by potentiometry with coulometric stripping (elution), and is by employing a working...
5882598 Wafer gap conductivity cell for characterizing process vessels and semiconductor fabrication processes and method of use  
A conductivity cell for use in determining ionic concentrations in the gap between two semiconductor substrates or wafers. The wafer gap conductivity cell is composed of two flat electrodes...
5882504 Method of measuring impurities  
A first solution is brought into contact with a surface of a sample so that impurities, which exist in the sample or on the surface of the sample, and the sample are dissolved in the first...
5846398 CMP slurry measurement and control technique  
Chemical mechanical polishing slurry characteristics, such as oxidant concentration and abrasive particle dispersion, are determined using electrochemical measurement techniques, such as...

Matches 1 - 50 out of 129 1 2 3 >