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7642094 |
Method of measuring biodegradation rate of unnatural organic compound
Provided is a method of measuring a biodegradation rate of a non-natural organic compound in the presence of a biodegradation medium, characterized by including: measuring a concentration of a...
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7381564 |
Method of calibrating the zero point of an apparatus used to determine a quantity of silica using a colorimetric method
A method of calibrating the zero point of an apparatus which is used to determine the quantity of silica contained in a silica solution sample to be analysed, using a colorometric method. The...
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7348181 |
Self-encoding sensor with microspheres
A microsphere-based analytic chemistry system is disclosed in which self-encoding microspheres having distinct characteristic optical response signatures to specific target analytes may be mixed...
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7229830 |
Standard sample composition and manufacture thereof
A standard sample composition containing a complexing agent and an alkali salt, mixed with a known amount of a foodstuff, the content of at least one component of which is accurately known. The...
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7141431 |
Microparticles with multiple fluorescent signals and methods of using same
This invention provides a novel fluorescent particle including a core or carrier particle having on its surface a plurality of smaller polymeric particles or nanoparticles, which are stained with...
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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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7109035 |
Synthetic urine and method of making same
A synthetic urine formulation, a kit including the synthetic urine formulation and a method of preparing synthetic urine are described. The urine formulation includes urine components in dried...
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7052916 |
Polypeptide analyses using stable isotope labeling
Methods for incorporating a stable isotope into a protein or peptide fragment are disclosed. The methods include providing isolated isotope-labeled protein or peptide fragments and analyzing the...
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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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6951718 |
rpoB gene fragments and a method for the diagnosis and identification of Mycobacterium tuberculosis and non-tuberculosis Mycobacterial strains
The present invention is related to rpoB gene fragments and method for the diagnosis and identification of Mycobacterium tuberculosis and non-lubercuolsis Mycobacterial strains using rpoB gene...
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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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6635487 |
Fluorescence standard for use in microfluidic instruments
A test device for use as a fluorescent standard in microfluidic analytical detection systems includes one or more slits that correspond to, and are of similar dimension to, one or more...
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6599746 |
Calibration fluid for calibrating a sensor for measuring a blood value and methods for producing and using the fluid
The calibration fluid is composed of a biocompatible electrolyte that, at 37° C., exhibits a concentration of bicarbonate ions that lies in the normal physiological range of the concentration of...
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6451607 |
External dried-reagent control for analytical test devices
A control device serving as a source of control reagent for a solid-phase analytical test device is disclosed. The analytical test device analyzes a biological sample for the presence of an analyte...
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6358743 |
Contraband substances reference sample carrier
A carrier for contraband substances to be used as a reference for testing trace detection systems. The carrier, which has the consistency of hand cream and can be dispensed from a tube or a...
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6294388 |
Indirect calibration of polymer characterization systems
Rapid characterization and screening of polymer samples to determine average molecular weight, molecular weight distribution and other properties is disclosed. Rapid flow characterization systems...
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5637505 |
Method to prepare dye-based reference material
Provided is a method of preparing dye-based reference materials useful for calibrating or qualifying instrument systems that are diagnostic spectroscopically for hemoglobin and CO-ox fractions. The...
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5633166 |
Method of analyzing medical specimens with improved length of analytical run determination
In high volume laboratory analysis of patient medical specimens, control materials are inserted at periodical intervals (e.g. once per eight hours) and analyzed. If the results of the analysis...
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5559035 |
Solid phase calibration standards
Solid phase ionic calibration standards are disclosed that comprise sparingly and selectively soluble solids. The calibration standards are especially useful in calibration pH electrodes used to...
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5435171 |
Apparatus for automatically preparing solution of powdery product as specimen for use in viscosity measurement
An apparatus for supplying a solution of a powdery product as a specimen of viscosity measurement. The apparatus includes electronic discharge-weighing device (4) for determining the amount of the...
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5401664 |
Analytical method for determining concentration of decomposition products in solvent used for solvent extraction
A safe analytical technique for determining the concentration amount of dibutyl and monobutyl phosphate degradation products in the TBP-dodecane solvent used in solvent extraction processes. This...
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5344779 |
Method for production of standard oxide sample for X-ray fluorescence spectrometry
A method for the production of a standard oxide sample for X-ray fluorescence analysis of an impurity element contained in an inorganic compound. The standard oxide sample is produced by accurately...
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5312756 |
Total organic carbon (TOC) and total inorganic carbon (TIC) calibration system
There are essentially three aspects to the present invention. In a first aspect, there is provided solid-phase calibration materials for selectively imparting predetermined inorganic or organic...
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5288642 |
Shelf-stable milk calibration standards
A calibration standard for calibrating machines which count the somatic cells in a milk sample, comprises an aqueous dispersion of microbeads bearing a fluorescent dye, a suspending agent, and an...
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5258308 |
Method, kit and apparatus for verifying calibration and linearity of vertical photometers
A method and apparatus for calibrating or checking the calibration of vertical photometers. The invention may also provide easy and convenient assay results for diagnostic profiles. The invention...
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5250441 |
Method for kit for estimating the amount of methyl anthranilate
A method and kit for estimating the amount of methyl anthranilate includes obtaining a sample suspected of having methyl anthranilate, acidifying the sample with a strong acid, adding sodium...
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5238845 |
Method for producing a CO.sub.2 calibration liquid
A method for producing a liquid phase substance having a pre-established concentration of CO 2 suitable for calibrating analytical instruments such as hemogasanalyzers consists in: preparing an...
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5227305 |
Buffer solution systems for standardizing pH analyzers and electrolytes
A formulation of combined-composition electrolyte and pH buffers for use as standardization solutions in analyzers for clinical chemistry which simultaneously use more than one ion-selective...
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5204264 |
Method for validation of calibration standards in an automatic chemical analyzer
In an automated analyzer that measures concentration of samples by comparing changes in a detector response caused by said samples to a calibration curve or factor based on one or more different...
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5183761 |
Method of making calibration solution for verifying calibration and linearity of vertical photometers
A method and device for calibrating or checking the calibration of vertical photometers. The invention may also provide easy and convenient assay results for diagnostic profiles. The invention...
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5116728 |
Reagents for CO.sub.2 detection
A stabilizer for maintaining a constant level of CO 2 in coenzyme containing enzymatic CO 2 diagnostic reagents is disclosed, comprising rate-limiting amounts of (a) the diagnostic reagents and...
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5070023 |
Aqueous ferrioxalate compositions useful as calibrants
Aqueous acidic ferrioxalate compositions are disclosed for use as calibrants of pCO2 and of PO2 after photodecomposition. Compositions with high iron(III) to oxalate molar ratios (e.g., 5:1 to...
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5013666 |
Control for blood gas/calcium analysis instrumentation
A liquid control standard for the use in the quality assurance of blood analysis instrumentation systems is disclosed. The liquid control standard is able to act as a control standard for blood gas...
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4935373 |
Reference liquid
A reference liquid for calibration or quality control of instruments which determine ionized calcium and pH. The reference liquid contains both a particular calcium ion activity and a pH-buffer and...
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4886965 |
Method for calibrating variable wavelength liquid chromatography detectors
A method for determining the wavelength accuracy of a variable wavelength liquid chromatography detector in the low UV range comprising filling the cell of the detector with a test solution and...
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4871678 |
Agent and process for the determination of calcium
An agent and process are used for the determination of calcium in liquids. The agent contains essentially orthocresolphthalein complexone, an acid and a zwitterionic buffer and is characterized in...
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4868126 |
Method of calibrating a fluorescent microscope using fluorescent calibration microbeads simulating stained cells
A method of calibrating a flow cytometer or fluorescent microscope is based on a set of highly uniform microbeads associated with a fluorescent dye in such a way that the microbeads have the same...
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4843013 |
Multiple control standard for blood analysis
This invention discloses a multiple control standard for the use in the quality assurance of blood analysis instrumentation systems. The liquid control standard is able to act as a control standard...
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4806486 |
Calibration liquid for ion-specific electrodes, process for preparing them and their application
A calibration liquid, especially suitable for ion-selective electrodes, containing albumin. This solution is stable and prevents errors by junction potentials or unknown complexing with calcium.
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4689308 |
Article for preparing a chemical sensor for use
The article includes a first vial (12) which is positioned within a second larger vial (32). The first vial (12) separately contains a first fluid, such as a first calibrating fluid, and the second...
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4689307 |
Fluorescence microscopy sample mounting method and structure
A method and structure for mounting fluorescent samples, e.g., fluorescent microbeads, are based on immobilizing the samples in a gel which preserves the spectral properties of the samples and...
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4572830 |
Process for determining and controlling the composition of aqueous solutions of NH.sub.3 and CO.sub.2
A process for determining the composition of an aqueous solution of ammonia and carbon dioxide from which ammonium carbamate or ammonium carbonate crystallizes out upon cooling to below the...
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4480030 |
Tripeptide derivatives and their application in assaying enzymes
A process for quantitatively assaying factor Xa from a medium by reacting the medium with tripeptide derivatives having the formula ##STR1## wherein R 5 is a chromogenic substituted amino group...
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4461718 |
Wavelength accuracy test solution
A wavelength calibration solution comprising from about 0.025 to about 0.140 molar neodymium and from about 0.135 to about 0.550 molar samarium, wherein the neodymium is present as a neodymium...
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4447544 |
Method and reagent for determining inorganic phosphate in biological sample
An aqueous reagent for determining inorganic phosphate in a protein-containing liquid biological sample comprises a molybdate salt, an acid capable of reacting with the molybdate salt to form...
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4439347 |
Photometric accuracy and linearity test solution
A solution of the type comprising cobalt ammonium sulfate and sulfuric acid. The solution is characterized in that it comprises from about 0.020 to about 0.040 N H 2 SO 4 . Also, a method for...
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4399022 |
Reference electrode for oxygen probe
In the reference electrode for the oxygen probe comprising a mixture of Cr powder and Cr 2 O 3 powder, an improved reference electrode characterized in that Cr powder and Cr 2 O 3 powder are...
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4336031 |
Method for the calibration of an oxygen sensing unit and calibration agent therefor
Disclosed herein is a method for the calibration of a sensing unit for determining the partial pressure of oxygen in contact with the sensing unit. The method is of the type using a...
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4324685 |
Blood serum reference standard
An improved blood serum reference composition of the type comprising blood serum having constituents of known values, characterized in that said composition further comprises a water soluble amine...
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4246133 |
Stabilized diazotized sulfanilic acid solutions
Nitrilotris (methylene) triphosphonic acid and 1,3,6-napthalenetrisulfonic acid are used to stabilize solutions containing diazotized sulfanilic acid.
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