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| Number | Title | Issue Date |
| 7759125 | Photoelectrochemical determination of chemical oxygen demand A photoelectrochemical assay apparatus and method for determining chemical oxygen demand (COD) of a water sample is described. The photoelectrochemical assay comprises: a) a measuring cell for holding a sample to be analysed ... | 07/20/2010 |
| 7598086 | Photoelectrochemical determination of chemical oxygen demand A photoelectrochemical assay apparatus for determining chemical oxygen demand (COD) of a water sample which consists of a) a measuring cell for holding a sample to be analysed b) a titanium dioxide nanoparticle pho... | 10/06/2009 |
| 7357896 | Resistometer A Biological Indicator Evaluator Resistometer (BIER vessel) provides enhancements in controlling the start and end points of exposure to a sterilant gas. The end point control employs a large volume relative to the test chamber volume upon which is drawn a deep vacu... | 04/15/2008 |
| 7247498 | Device to alternately supply a fluid to an analyzer Apparatus and methods for supplying a portion of a fluid stream and, alternately, a fluid of known composition and concentration to an analyzer are provided. The fluid stream is directed through a series of connected chambers formed in an integral housing. A samplin... | 07/24/2007 |
| 7244357 | Pumps for filtration systems Improvements in product water throughput from a reverse osmosis (RO) membrane filter achieved by thinner feed spacers in the RO element, enhanced recovery (ratio of permeate to feed), pressure recovery of the retentate fluid pressure opposing the feed water pressure... | 07/17/2007 |
| 6852541 | Rapid assay for testing overall oxidative stress The invention relates to an assay for testing oxidative stress of a subject by measurement of oxidants in biological fluids such as urine, plasma, bioreactor medium and respiratory aspirants. There is provided a method of determining oxidative stress in a mammalian ... | 02/08/2005 |
| 6811751 | Method and apparatus for determining indirectly the concentration of a specific substance in the blood Method and apparatus for determining in a person's exhalation air the concentration of a specific substance in the blood by measuring the concentration of said substance and the concentration of water vapor in the exhalation air and utilizing a known relationship be... | 11/02/2004 |
| 6602717 | Apparatus for eliminating halide ions from aqueous solutions and method to remove halide ions from liquid aqueous samples Apparatus for eliminating halide ions such as chloride ions from aqueous solutions having a hollow cylindrical sample holding chamber (2), the front end of which has an orifice (3) and in the vicinity of which is disposed a filter plate (4) that extends o... | 08/05/2003 |
| 6569683 | Use of oxidative stress diagnostic plot as a health indicator for assessing oxidative stress and its control in humans A diagnostic plot derived from the measurement of 82 assays which characterize two key parameters which significantly contribute to an individual's health status. These two parameters are oxidative stress profile (OSP) and antioxidant profile. Each of the... | 05/27/2003 |
| 6555379 | Device for monitoring a processing liquid A device for monitoring a processing liquid comprising at least one sensor for generating at least one monitoring signal, and a device for processing the monitoring signal and for generating a control signal for directly or indirectly influencing the comp... | 04/29/2003 |
| 6479299 | Pre-disposed assay components in microfluidic devices and methods Microfluidic devices having predisposed assay components for increased throughput and prolonged shelf life are provided.... | 11/12/2002 |
| 6455317 | Method of controlling a chemical process by microwave radiation A system and method for controlling a microwave heated chemical process is disclosed. Time varying concentrations of some chemical substances within fumes in the microwave oven are monitored to detect concentration variations for which responses are known... | 09/24/2002 |
| 6413782 | Methods of manufacturing high-throughput screening systems Microfluidic devices for analyzing a plurality of compounds are manufactured for performing high throughput screening assays. The methods are used to manufacture devices that screen large numbers of different compounds for their effects on a variety of ch... | 07/02/2002 |
| 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 the other vessel. The test sample is placed in the larger v... | 04/09/2002 |
| 6284542 | Oxidative metabolism in smooth muscle cells: Methods and materials relating thereto The application concerns oxidative metabolism in smooth muscle cells and to methods and materials related thereto. Provided is a method which is a medium suitable for the support of oxidative metabolism comprises: 1) incubating a cell or tissue sample wit... | 09/04/2001 |
| 6197256 | Device for analyzing fluid samples An analyzing system for analyzing fluid samples includes a measuring buoy immersible in a body of fluid to be tested. The buoy forms a sample chamber in which samples of the fluid are to be tested. The sample chamber communicates with a settling chamber t... | 03/06/2001 |
| 6180413 | Low level TOC measurement method A method for the determination of total organic carbon in an aqueous sample by trapping the organic matter on a sorbent which is carbon free and analyzing the sorbent by combustion and determination of total CO2 by IR.... | 01/30/2001 |
| 6146896 | Method and apparatus for measuring the nitrification effectiveness of activated sludge A method and apparatus for determining nitrification effectiveness of activated sludge in an aqueous solution, includes supplying equivalent quantities of an activated sludge, an aqueous solution, and a gas containing oxygen to each of first and second re... | 11/14/2000 |
| 6143568 | Method for determining constituents in water A method for determining constituents in water, in particular the content of organic carbon and/or nitrogen, in which an aqueous sample is evaporated and combusted in at least one heating vessel (154a) provided with a heater (154), and the combustion prod... | 11/07/2000 |
| 6114172 | Process and device for determining the biological oxygen demand of sewage In order to determine the biological oxygen demand of sewage, a sample of sewage is taken into a reaction vessel in which there is a biological bath which is kept moving turbulently by an agitator. An oxygen probe measure the oxygen consumption per unit t... | 09/05/2000 |
| 6090287 | Laboratory method used for bioremediation An improved method for in situ microbial filter bioremediation having increasingly operational longevity of an in situ microbial filter emplaced into an aquifer. A method for generating a microbial filter of sufficient catalytic density and thickness, whi... | 07/18/2000 |
| 6080385 | Oxidative metabolism in smooth muscle cells: methods and materials relating thereto Disclosed are methods for measuring non-contractile oxidative metabolism in smooth muscle cells comprising providing a medium suitable for the support of oxidative metabolism, incubating a cell or tissue sample with a specimen from a patient, measuring a ... | 06/27/2000 |
| 6077708 | Method of determining progenitor cell content of a hematopoietic cell culture The invention provides a method of determining the content of progenitor cells in a hematopoietic cell culture. The method comprises measuring one or more metabolic parameters of the culture, such as oxygen consumption, glucose consumption and/or lactate ... | 06/20/2000 |
| 6063617 | On-line respirometer using constant oxygen concentration in reaction vessel An on-line respirometer for measuring oxygen uptake by wastewater samples, plants, or animals due to respiration. A closed reaction vessel is adapted to receive and expel wastewater samples or the like. The vessel contains oxygen-sensing probes that const... | 05/16/2000 |
| 6033912 | Method of controlling a chemical process heated by microwave radiation A system and method for controlling a microwave heated chemical process is disclosed. Time varying concentrations of some chemical substances within fumes in the microwave oven are monitored to detect concentration variations for which responses are known... | 03/07/2000 |
| 5993742 | Device for the analysis of liquids A device for the investigation of liquids, in particular of waste water, includes at least one reaction chamber for receiving the liquid to be investigated as well as liquids for analysis from storage containers. The reaction chamber is disposed in a hous... | 11/30/1999 |
| 5976888 | Method for measuring NOx in biochemical processes A method for measuring NOx in biochemical processes which includes a) isolating a liquid sample; b) adjusting the pH or ionic strength of the sample; c) recording mV values present in the sample after predetermined time periods; d) determining ... | 11/02/1999 |
| 5972637 | Determining the organic content of a fluid The organic content of a fluid is determined by: (a) reacting a sample of a fluid containing organic matter (such as viable biomass or soluble or insoluble organic compounds) with excess oxidizing agent; (b) permitting an enzyme catalyzed release of oxyge... | 10/26/1999 |
| 5972711 | Microwave assisted chemical processes A method for microwave assisted chemical processes is disclosed that comprises applying sufficient microwave radiation to a temperature-monitored mixture of reagents, with at least one of the reagents being thermally responsive to electromagnetic radiatio... | 10/26/1999 |
| 5952188 | Reusable immobilized microbial composition useful as ready-to-use seed inoculum in BOD analysis A reusable immobilized microbial composition is formulated. The formulated microbial composition comprises a synergistic mixture of the bacterial strains of Enterobacter cloaca, Citrobacter amalonaticus, Pseudomonas aeruginosa,Yersinia enterocolitica, Kle... | 09/14/1999 |
| 5932174 | Device for chloride ion removal prior to chemical oxygen demand analysis A method of pretreating aqueous chemical oxygen demand (COD) samples to remove the risk of potential chloride ion interference. The method comprises acidifying an aqueous COD test sample, and thereafter passing the acidified sample through a source of pen... | 08/03/1999 |
| 5882932 | Continuous quick measurement of biochemical oxygen demand and apparatus A continuous, quick measurement method of BOD, and an apparatus therefor is disclosed. The apparatus comprises a sample tank in which a sample is prepared suitably for the measurement, a reactor in which microorganisms maintain their activity, a medium re... | 03/16/1999 |
| 5863749 | Determining the organic content of a fluid The organic content of a fluid is determined by: (a) reacting a sample of a fluid containing organic matter (such as viable biomass or soluble or insoluble organic compounds) with excess oxidizing agent; (b) permitting an enzyme catalyzed release of oxyge... | 01/26/1999 |
| 5856119 | Method for monitoring and controlling biological activity in fluids A method of monitoring a microbiological process in a fluid supply involving isolation of a fluid sample from a fluid supply, measuring the pH of the fluid sample at selected time intervals, then calculating changes in pH, if any, to determine a pH variat... | 01/05/1999 |
| 5840583 | Microwave assisted chemical processes A method for microwave assisted chemical processes is disclosed that comprises applying sufficient microwave radiation to a temperature-monitored mixture of reagents, with at least one of the reagents being thermally responsive to electromagnetic radiatio... | 11/24/1998 |
| 5807699 | Apparatus and method for monitoring condition of a biomass The invention relates to apparatus (1) for monitoring condition of a biomass, particularly that naturally occurring in activated sewage sludge, comprising a vessel (2) for holding a liquid in the form of the activated sewage sludge containing a biomass (3... | 09/15/1998 |
| 5770153 | Integrated analytical device for determining the gas consumption of matter An analytical device for determining the gas consumption of matter, specifically the oxygen demand of organic matter includes a container for holding the sample which is to be analyzed and a cop to seal the container gas-tight. Electrical and/or electroni... | 06/23/1998 |
| 5702951 | Continuous RBCOD measurement The invention provides a method and apparatus for providing periodical measurements of the real-time readily biodegradable chemical oxygen demand (RBCOD) of a wastewater stream. The apparatus includes a bio-reactor having an inlet for accepting a feed fro... | 12/30/1997 |
| 5688660 | Method for determining product biodegradability A method is directed to a measurement of the biodegradation of a product organic carbon source by the measurement of the change in conductivity of a solution that has absorbed carbon dioxide evolved from the biodegradation of a product organic carbon sour... | 11/18/1997 |
| 5683914 | Method for chloride ion removal prior to chemical oxygen demand analysis A method of pretreating aqueous chemical oxygen demand (COD) samples to remove the risk of potential chloride ion interference. The method comprises acidifying an aqueous COD test sample, and thereafter passing the acidified sample through a source of pen... | 11/04/1997 |
