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7592184 |
Ammonia detection and measurement device
There is disclosed an apparatus and method for detecting and measuring volatile acidic or basic components including ammonia, ammonium, or volatile amines (compound) in a gas or liquid state fluid....
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7582485 |
Method and device for detecting ammonia odors and helicobacter pylori urease infection
The invention provides a breath testing device which visually indicates the presence of ammonia in a patient's breath, in particular ammonia from helicobacter pylori urease infection. The breath...
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7538188 |
Method for fabricating an olfactory receptor-based biosensor
A biosensor, a method of making a biosensor, and a method of using a biosensor are described. A biosensor includes a transducer and a peptide encoding the most probable binding domain of an...
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7442555 |
Ammonia gas sensor method and device
A mixed potential sensor device and methods for measuring total ammonia (NH 3 ) concentration in a gas is provided. The gas is first partitioned into two streams directed into two sensing chambers....
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7425453 |
Integrated circuit porphyrin-based optical Fabry-Perot chemical sensor
A Fabry-Perot cavity has a pair of partially transmissive, partially reflective, surfaces. A first of the surfaces is flexibly suspended adjacent and parallel to a second of the surfaces. A gap...
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7364912 |
Controlling the flow of hydrogen and ammonia from a hydrogen generator during a breakthrough with hydrated copper (II) chloride trap
Gas flow is controlled to a feed gas consuming device depending on whether a contaminant gas is present. In one embodiment, hydrogen gas flow from a hydrogen gas generator to a hydrogen consuming...
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7341694 |
Ammonia sensor
In an ammonia sensor ( 1 ), lead portions ( 7 ) and ( 9 ) are provided on an insulating substrate ( 5 ); a pair of comb-shaped electrodes ( 11 ) and ( 13 ) are connected to the lead portions ( 7 )...
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7294512 |
Solution for calibrating a chemical analyzer for alcohol, carbonate and ammonia assays
A multi-analyte calibration solution having known amounts of sodium carbonate, ammonium bicarbonate, and ethyl alcohol, with pH adjusted within a range between about 7.8 and 8.4.
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7267989 |
Method and device for measuring sulfur compound and/or ammonia based on a sensory unit coated with at least one novel peptide
A peptide compound for measuring sulfur compound and ammonia and measurement method and device using the compound. The method comprises contacting an analyte with a sensory device coated with the...
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7229835 |
Amine detection method and materials
A compound linked to a solid support (R) through a divalent linker moiety (X) and which is represented by the following formula:
is disclosed. In particular, the...
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7189574 |
Measurement of nitrogen content in a gas mixture by transforming the nitrogen into a substance detectable with nondispersive infrared detection
A method of determining the amount of nitrogen in a gas mixture. The constituent gases of the mixture are dissociated and transformed to create a substance that may measured using nondispersive...
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7186799 |
Peptide and amine examination method using the same
A peptide for detecting amine, and a method and apparatus for detecting amines using the peptide. The method comprises the application of a sensor to examine a sample, wherein the sensor is coated...
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7153693 |
Method and apparatus for determining urea concentration
A method for determining a urea concentration in an aqueous solution containing urea, includes: hydrolyzing the urea in the aqueous solution, measuring an electric conductivity χ of the aqueous...
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7148066 |
Dye solutions for use in methods to detect the prior evaporation of anhydrous ammonia and the production of illict drugs
Systems and methods providing for the introduction of a dye, particularly a xanthene dye, and more particularly a rhodamine dye, to liquid anhydrous ammonia to discourage theft of the anhydrous...
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7091043 |
Method for measuring water concentration in ammonia
Method and apparatus for measuring a water concentration in ammonia, comprising using ammonia having a water concentration of 10 ppm or less as a reference gas, introducing the ammonia at a...
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7067320 |
Sensor for luminescense-optical determination of an analyte
The invention relates to an optochemical sensor functioning in accordance with the FRET-principle and exhibiting an acceptor (chromophore or luminophore) responsive to an analyte contained in a...
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7067319 |
System for diagnosing reagent solution quality and emissions catalyst degradation
A system for determining a reagent solution quality indicator includes a reagent solution source for supplying the reagent solution to an emissions catalyst configured to receive a NOx-containing...
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7033839 |
Quick acting toxic ammonia test for aqueous samples
A method, test reagent and device usable as a test strip for detecting toxic ammonia levels in water samples such as aquarium water. The volume of the water to be tested contacted with a soda lime...
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6921668 |
Determining infections in liquid samples by detecting short-chain fatty acids and ammonia in the headspace associated with the liquid sample using polymer sensors
A method for determining the presence of an infection in a liquid sample comprising the steps of: lowering the pH of the liquid sample so as to drive short-chain fatty acids present in the liquid...
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6881583 |
Water chloramination control system
A water chloramination control system compares the concentration of aqueous higher chloramines to aqueous ammonia to optimize the ratio of added ammonia to chlorine. Aqueous ammonia concentration...
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6790264 |
Control of ammonia emission from ammonia laden fly ash in concrete
The present invention relates to a pozzolanic admixture containing ammonia-laden fly ash, method for making the pozzolanic admixture and method for controlling ammonia gas (NH 3 ) emission from...
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6763585 |
Method for producing micro bump
A resist pattern in accordance with a predetermined pattern is formed on a substrate. Next, a bump resist mixed with a micro metallic powder is made thicker than the resist pattern and formed on...
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6720171 |
Combinatorial preparation and testing of heterogeneous catalysts
A process for preparing arrays of two or more heterogeneous catalysts, heterogeneous catalyst precursors, or combinations thereof in a body having preferably parallel through-channels. In this...
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6509194 |
Method and apparatus for determining concentration of NH-containing species
A method and apparatus for determining ammoniacal species concentration in a gas sample. In one embodiment, trace concentration of ammonia in an air sample is determined by monitoring emission...
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6406669 |
Polyaniline-based optical ammonia detector
Electronic absorption spectroscopy of a polyaniline film deposited on a polyethylene surface by chemical oxidation of aniline monomer at room temperature was used to quantitatively detect ammonia...
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6368870 |
Controlled diffusion analysis
A method is described for determining the presence of a volatile component in a test sample. The method involves use of two separate vessels, one of which is capable of being placed wholly within...
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6337211 |
System and a method for detecting antifreezing substances in a hermetic compressor
The invention relates to a system and a method for detecting antifreezing substances in a hermetic compressor.
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6248595 |
Method of measuring a nitrification rate for liquids
The invention relates to apparatus and a method for measuring NO x in biochemical processes, and to apparatus and methods for real time measuring the nitrification and/or denitrification rate of a...
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6187596 |
Airborne contaminant indicator
An indicator system provides a visual indication of the cumulative level of an airborne contaminant. The indicator is a transparent sheath with support medium having an acidic surface and treated...
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6143246 |
Apparatus for measuring ammonia in biochemical processes
The present invention relates to apparatus and a method for measuring ammonia in biochemical processes, and more particularly to apparatus for real time measuring the amount of ammonia in a liquid...
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6107099 |
Hydrophobic fluorescent polymer membrane for the detection of ammonia
The present invention provides an ammonia sensor including a pH sensitive fluorophore immobilized in a hydrophobic polymer, wherein the fluorophore can react quantitatively with ammonia and the...
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6069013 |
Sensor for the selective detection of ammonia in no.sub.X -containing, oxygen-rich gases
A sensor for selective detection of ammonia in high-oxygen, NO x -containing gas. The sensor has a component part acting as the capacitor, and a gas-permeable sensitive layer as the dielectric,...
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5989840 |
Estimation of active infection by heliobacter pylori
Disclosed is a diagnostic apparatus for estimating an active Heliobacter pylori infectious agent in saliva, comprising in combination an immunoassay chamber in which a first portion of said saliva...
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5968835 |
Method for estimating nitric acid and nitrous acid ions
To estimate nitric acid ions and nitrous acid ions in a sample solution, a method is proposed which comprises the steps of (a) feeding both the sample solution and a reducing agent to an acidic...
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5958786 |
Fluorescent polymeric sensor for the detection of creatinine
The present invention provides a creatinine sensor material having a first layer of a protonated pH sensitive fluorophore immobilized in a hydrophobic polymer, wherein the fluorophore can react...
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5945343 |
Fluorescent polymeric sensor for the detection of urea
The present invention provides a urea sensor material having a first layer of a protonated pH sensitive fluorophore immobilized in a hydrophobic polymer, wherein the fluorophore can react...
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5882937 |
Ammonia monitor
Ammonia monitor and method of use are disclosed. A continuous, real-time determination of the concentration of ammonia in an aqueous process stream is possible over a wide dynamic range of...
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5866075 |
Device useful for sensing ammonia and nitrogen oxides(s) gases at room temperature
A device for sensing ammonia (NH 3 ) and nitrogen oxide (NO x ) gases comprising: a sensor for detecting said ammonia and said nitrogen oxide gases, said sensor including a substrate and a layer...
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5858798 |
Method and apparatus for detecting amines and ammonia by fluorescence
Primary amines, ammonia, or mixtures thereof can be detected using a reagent comprising from about 650 ppm to about 25 percent by weight of phthalic dicarboxyaldehyde; from about 74 to about 99.88...
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5854077 |
Continuous measurement of particulate nitrate
A method for continuously measuring particulate nitrate in a gas sample, comprising the steps of passing the gas sample through an inertial impactor with a 50% cut off at 2.5 microns, removing...
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5837199 |
Measurement apparatus for analyzing fluids
The invention relates to a measurement apparatus (1) for analysing fluids, comprising a container (3) in the form of a syringe, into which a fluid may be taken in via an intake device (14) through...
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5756631 |
Siloxanes with strong hydrogen bond donating functionalities
Viscous, liquid hexafluoroisopropanol-siloxane polymers having the basic structure: ##STR1## wherein R 1 is a monovalent hydrocarbon radical selected from the group consisting of C 1 -C 6 alkyl...
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5739038 |
Spectrometer gas analyzer system
A gas analyzer system for providing a spectroscopic analysis of the sample gas. This analysis is accomplished by first introducing the sample gas into the inlet of the system and transporting it to...
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5668014 |
Device and method for estimating three nitrogen-including ionic substances in water
To estimate nitric acid ions and nitrous acid ions in a sample solution, a method is proposed which comprises the steps of (a) feeding both the sample solution and a reducing agent to an acidic...
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5620900 |
Means and method for the determination of ammonium ions
The invention relates to an absorptive support and a method for the determination of ammonium ions in aqueous solutions by the Berthelot method using one absorptive support. The absorptive support...
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5521060 |
Use of a sparingly soluable salt of a heteropoly acid for the determination of an analyte, a corresponding method of determination as a suitable agent therefor
A sparingly soluble salt of a heteropoly acid is used for the determination of an analyte which is an aromatic amine rich in electrons or together with another substance leads to such an amine. The...
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5506148 |
Method for activation of polyanionic fluorescent dyes in low dielectric media with quaternary onium compounds
The invention pertains to a method for generating the fluorescence of polyanionic fluorophores in low dielectric media with fluorescence activation produced by specific quaternary onium compounds....
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5496521 |
Analyzing device including an ion-permeable channel connecting a sample chamber with a reaction space
In a device for determining the concentration of a reagent from a group consisting of gases with acid or alkaline reaction in aqueous environments, and volatile acids and bases in liquid or gaseous...
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5494640 |
Device for identifying at least one gaseous component in a gaseous or liquid sample
A sensor device is disclosed for identification of a gaseous component in a gaseous or liquid sample. The sensor device comprises an optode membrane having sensitivity for the gaseous component to...
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5445943 |
Method for the colorimetric determination of an analyte by means of benzyl alcohol dehydrogenase and a chromogenic redox indicator
The invention concerns a method for the colorimetric determination of NADH by means of enzymatic oxidation with benzyl alcohol dehydrogenase whereby an aromatic nitrosoaniline compound of the...
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