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7439318 |
Method for trace water analysis in cyclic siloxanes useful as precursors for low dielectric constant thin films
An analytical technique for the accurate and precise measurement of trace water in chemical reagents, comprising the steps of combining a chemical reagent comprising ≦5 ppm water, with...
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7419831 |
Method and apparatus for determination of water and for normal phase liquid chromatography
A method for calibrating an analysis instrument, e.g., a gas chromatograph, for water analysis that includes four steps. The first step is to continuously remove water from a liquid that contains...
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7416894 |
Stable water standard
The invention relates to water standards that are producible by grounding and mixing at least one component abounding in water and one water-free or low water component each. The inventive water...
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7407625 |
Volume-differential water assay system using hydrophilic gel
Systems and methods for measuring the moisture and sediment content of a petroleum sample. In one embodiment, a sample to be tested is collected in a field bottle. The sample from the field bottle...
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7354768 |
Volume-differential assay using hydrophilic gel
Systems and methods for measuring the moisture and sediment content of a petroleum sample. In one embodiment, a sample to be tested is collected in a field bottle. The sample from the field bottle...
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7319037 |
Fluid tester and method of use
Fluid testing device for determining the value of each of a plurality of properties of a fluid, the fluid testing device including a planar base and a plurality of test sections, located on the...
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7247485 |
Karl Fischer reagent
Karl Fischer reagent comprising iodide, sulphur dioxide with an initial concentration above 0.5 M, and imidazole/imidazole derivative dissolved in alcoholic solvent, whereby the molar ratio between...
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7189572 |
Method for measuring water content of fuel cell based on conductivity of electrolyte
A measuring method first calculates the conductivity of an electrolyte membrane based on measured output voltage and output current of a fuel cell. The water content of an oxidant channel as an...
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7122376 |
Calibration standards, methods, and kits for water determination
The invention relates to a formed tablet calibration standard-reagent for calibrating Karl Fischer reactions for determining water content in a substance, the reagent containing a first component,...
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7112443 |
High throughput permeability testing of materials libraries
A library of material samples is screened for properties such as permeability. A library of material samples is provided. A stimulus such as an exposure to a permeate fluid is provided to each...
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7109037 |
Water-based resist stripping liquid management apparatus and water-based resist stripping liquid management method
The water-based resist stripping liquid management apparatus according to the present invention manages in an adjusting bath a water-based resist stripping liquid that is used in resist stripping...
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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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7049146 |
Calibration standards, methods, and kits for water determination
The present invention relates to a formed tablet calibration standard-reagent for Karl Fischer reactions to determine the water content of substances, such as pharmaceuticals, food stuffs, and oils.
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6938626 |
Method and apparatus for wet-cleaning substrate
An apparatus for wet cleaning a substrate includes a clean air supplier for supplying the clean air into a cleaning draft, a humidifier for supplying steam or mist like water drops into the...
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6927063 |
Humidity indicators
Silica-based carrier impregnated with iron(III) or iron(II) salts functions as a humidity indicator giving a yellow/amber to nearly colourless colour change as the carrier humidifies.
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6825040 |
Method of using a vapor acid test kit
An acid test kit uses an indicator paper in a transparent tube which is easily and temporarily inserted in a Schrader-valve at a compressor suction inlet of a refrigeration system. The simplicity,...
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6815207 |
Moisture/wetness detecting method, moisture/wetness detecting label, articles with moisture/wetness detecting function, and detecting material and method
A method of detecting moisture or wetness which enables determination as to whether or not precision instruments or industrial products have undergone improper conditions, is described, which...
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6815208 |
Chemical treatment for hydrostatic test
A method of treating hydrotest water to inhibits oxygen corrosion, microbiologically influenced corrosion (MIC) and to allow safe discharge of water. The combination treatment plan reduces biocide...
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6793889 |
Wide-range TOC instrument using plasma oxidation
Total organic carbon in an aqueous or gaseous sample is measured by admitting the sample and an oxidant gas to a cell transparent to plasma, establishing a relatively low energy plasma in the cell,...
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6770483 |
Determination of multi-valent metal contamination and system for removal of multi-valent metal contaminants from water
A test for determining the presence of multi-valent metal contaminants, such as arsenic, mercury and chromium, when present in certain valence states and a system for removal of these contaminants...
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6699717 |
Method using luminescent transition metal-ligand complex for detecting polar solvents
The present invention relates to a transition metal-ligand complex that shows changes in its luminescence lifetime characteristic and/or luminescence intensity as a function of the polarity and/or...
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6599748 |
Hardness indicator composition and method of water hardness analysis
A hardness indicator composition, and a method of water hardness analysis, capable of measuring hardness even with higher-hardness water without requiring titration by a two-liquid system. The...
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6582658 |
Fiber optic moisture sensor
A fiber optic moisture sensor is described that can detect the presence or concentration of an analyte in an environment; additionally, a method for making the sensor is described. The invention...
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6576473 |
Removable test kit and method of use for vapor compression systems
A field-installable and removable moisture and/or acid test kit and method is used for a vapor compression system. A moisture and/or acid indicator is provided in the test kit which is installed at...
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6514765 |
Acid test kit and method of use
An acid test kit uses an indicator paper in a transparent tube which is easily and temporarily inserted in a Schrader-valve at a compressor suction inlet of a refrigeration system. The simplicity,...
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6436710 |
Headspace sampling and monitoring systems and methods
A headspace sampling system monitors materials in wastewater. The headspace sampling system comprises a sample receptacle that can contain a wastewater sample; a sparger chamber vapor column; a...
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6376250 |
Composition and probe for detection of water
A visual indicating paste composition for detecting of aqueous solutions in hydrocarbons by changes in color. The paste is utilized by placing on a probe and inserting the probe in a storage device...
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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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6228650 |
Acid catalyst regeneration control
In an HF alkylation process where an acid catalyst regeneration column separates HF acid from ASO and water to provide regenerated catalyst for a catalyst circulation stream, and where buildup of...
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6159427 |
Apparatus for tritium-in-water monitoring
A method and apparatus for in-line tritium-in-water monitoring in which a sample of water is vaporized at a temperature sufficient to transform it to dry water vapor substantially free of liquid...
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6110122 |
Breath test for assessing hepatic function
Provided herein is a novel breath test for assessing hepatic function. The test involves administration of a labeled methionine or methionine metabolite to a subject and measurement of the expired...
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6043096 |
Device and method for the determination of water
A test device and method is described for directly determining the liquid phase water content of organic solvents and indirectly the liquid phase water content of solids. The device and method...
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5976890 |
Reduction furnace process for quantitative deuterium determination in hydrogen containing samples
The invention relates to a method for the quantitative determination of deuterium in samples containing hydrogen, and to a reduction oven for reducing gaseous or liquid substances containing...
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5879943 |
Humidity detection method
A humidity detection material includes oxide of at least one metal selected from the group consisting of Mg, Ca, Mn, Fe, Co, Ni, and Cu. The metal oxide is preferably in the form of a porous...
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5869344 |
Apparatus and methods for the analysis of trace constituents in gases
The invention comprises a novel sample introduction system which incorporates a venturi pump to convey a sample gas to an analytical instrument at atmospheric pressure. An APCI, ICP or MIP mass...
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5854080 |
Process for separating tritiated water
A process and apparatus for separating tritium from an aqueous solution that contains one or more additional dissolved radionuclides is disclosed. In accordance with the process the aqueous...
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5846831 |
Methods and systems for controlling flow of a diluted sample and determining pollutants based on water content in engine exhaust emissions
In a first embodiment of the present invention, a control method and system are provided in an exhaust emission sampling system for controlling a flow controller in order to compensate for the...
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5783149 |
Kit for determination of residual chlorine in water with 3,3',5,5'-tetramethylbenzidine
Colorimetric methods for determination of residual chlorine, free and combined, in water are described which comprise the use of 3,3',5,5'-tetramethylbenzidine (TMB), as well as methods and kits...
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5756049 |
Water testing capsule using water soluble film membranes
A capsule package and a touch-free method for water analysis. It allows for addition of dry ingredients and aqueous test reagent without any human intervention, and therefore substantially...
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5739034 |
Determination of extraneous water in milk samples, or the freezing point depression of milk samples
The present invention relates to a method for quantitatively assessing the amount of any extraneous water contained in a milk sample, the method comprising the steps of (a) performing a...
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5734097 |
Analyzer and method for measuring water in liquids
An analyzer and method for detecting and measuring the water content in a liquid sample in which the liquid sample is fed from its source to a head space chamber. The flow of liquid to the chamber...
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5593850 |
Monitoring of industrial water quality using monoclonal antibodies to polymers
The invention provides methods and compositions for monitoring chemicals used to prevent corrosion in industrial water containers. The invention is useful for chemicals such as polymers, in...
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5580791 |
Assay of water pollutants
A method of assay of antioxidant activity of a sample of water, which comprises monitoring the change exerted by the sample on a luminescent reaction.
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5504009 |
Method of and device for measuring water content
This invention consists in a device consisting of a vessel (1) containing chemical solution soluble in water, a sample room or sample itself (13), and electric conduction meter (3); and a method in...
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5468644 |
Spectroscopic investigation using organometallic compounds
Organometallic compounds such as tricarbonyl-(η 4 -1,3-cyclo-hexadiene)lron(O) display an infrared spectrum which varies according to the solvent polarity, pH and similar factors. By comparing...
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5466606 |
Use of N-methylformamide as solvent for the Karl Fischer titration
The invention relates to the use of N-methylformamide as solvent in the determination of water by the Karl Fischer method.
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5453377 |
Methods for making iodine-free Karl Fischer reagents
Various methods are described for producing volumetric one-component iodine-free Karl Fischer reagents useful for determining the water content of a sample, the reagents containing triiodide as the...
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5389545 |
Reagents, methods and kits for water determination
An essentially iodine-free and pyridine-free single component reagent for volumetric water analysis using the Karl Fischer reaction, a process for making the reagent, and the use of the reagent to...
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5345774 |
Method and apparatus for zero emissions testing of a refrigerant in a closed system
An external fluid circuit capable of being connected between service valves provided on a closed system containing a refrigerant. The external fluid circuit is provided with a testing tube and...
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5317896 |
Method of detecting liquid in a sterilization system
A method is provided for detecting moisture in a sterilization chamber or other enclosure (including moisture present on the external or lumened surfaces of an instrument or other load placed in...
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