Patent application number | Description | Published |
20100112682 | TOTAL BACTERIA MONITORING SYSTEM - A system for measuring total microbiological content in an aqueous medium by adding a fluorescent dye to the aqueous medium, measuring the fluorescent signal in the aqueous medium to obtain a baseline fluorescent signal, releasing intracellular content of the microbiological matter into the aqueous medium by lysing the microbiological matter. The system then measures the fluorescent signal in the aqueous medium with the released intracellular content of the microbiological matter to obtain a second fluorescent signal. Next, the system subtracts the baseline signal from the second fluorescent signal to obtain a net fluorescent signal and equates the net fluorescent signal with a microbiological content. | 05-06-2010 |
20100178208 | OPTICAL SENSOR ARRAY SYSTEM FOR PARALLEL PROCESSING OF CHEMICAL AND BIOCHEMICAL INFORMATION - Total analysis systems and methods for simultaneously monitoring a suite of biological and/or chemical species in water and/or other process systems are disclosed. The system provides a sample-volume controlled sensor array comprising a fluid delivery device and a plurality of optical sensor elements for determining the presence and total concentrations of multiple analytes in the process system simultaneously. Image identification algorithms are provided for identifying the analytes based on image intensity, color pattern, positional arrangement, and the like. The methods incorporate multivariate optimization algorithms to analyze multiple sensor responses. This produces analytical results that are typically difficult to obtain without full system or variable compensation. The improved array response may then be utilized to measure, monitor, and control the concentration of analytes in the chemical or biological sample or water system. | 07-15-2010 |
20120121466 | METHODS AND SYSTEMS FOR DELIVERY OF FLUIDIC SAMPLES TO SENSOR ARRAYS - Total analysis systems and methods for simultaneously monitoring a suite of biological and/or chemical species in water and/or other process systems are disclosed. The system provides a sample-volume controlled sensor array comprising a fluid delivery device and a plurality of optical sensor elements for determining the presence and total concentrations of multiple analytes in the process system simultaneously. Delivery means are provided to deliver a metered quantity of sample fluid to the sensor array. Image identification algorithms are provided for identifying the analytes based on image intensity, color pattern, positional arrangement, and the like. The methods incorporate multivariate optimization algorithms to analyze multiple sensor responses. This produces analytical results that are typically difficult to obtain without full system or variable compensation. The improved array response may then be utilized to measure, monitor, and control the concentration of analytes in the chemical or biological sample or water system. | 05-17-2012 |
Patent application number | Description | Published |
20090004747 | FILM SENSORS FOR DETECTING FREE CHLORINE - The present invention discloses a thin reagent containing film sensor for detecting and measuring free chlorine in water, where components of the film sensor are a polymeric substrate that contains reactive material, an organic polyhydroxy compound, a reagent that creates an associated polymeric matrix, and an indicator; and a method for making the same. The film sensor can be formed to fit a specific dimension or shape. The film sensor swells or dissolves when exposed to aqueous solutions so that said reagent is released so that it can react with free chlorine, or the film sensor swells when exposed to aqueous solutions so that the aqueous solution diffuses into the film sensor and reacts with said reagent contained within the swollen film sensor. | 01-01-2009 |
20090044603 | ARTICLE, DEVICE, AND METHOD - An article includes a substrate assembly for use in a detector system. The substrate assembly includes a substrate; a sample reception structure secured to the substrate; a test window extending through the substrate; and a fluid channel defined by a surface of the substrate and extending from the sample reception structure to the test window. | 02-19-2009 |
20100112630 | METHODS FOR MEASURING MICROBIOLOGICAL CONTENT IN AQUEOUS MEDIA - A process for measuring total microbiological content in an aqueous medium includes adding a fluorescent dye to the aqueous medium, measuring the fluorescent signal in the aqueous medium to obtain a baseline fluorescent signal, releasing intracellular content of the microbiological matter into the aqueous medium by lysing the microbiological matter, measuring the fluorescent signal in the aqueous medium with the released intracellular content of the microbiological matter to obtain a second fluorescent signal, subtracting the baseline signal from the second fluorescent signal to obtain a net fluorescent signal and equating the net fluorescent signal with a microbiological content. Methods for measuring biofilm and adjusting for background noise are also provided. | 05-06-2010 |
20110003391 | SENSOR FILMS, METHODS FOR MAKING AND METHODS FOR MONITORING WATER-SOLUBLE POLYMER CONCENTRATIONS - A multiple-component sensor film includes a carrier polymer matrix and film reactants dispersed within the carrier polymer matrix. The carrier polymer matrix includes a carrier polymer, which includes hydroxypropyl cellulose polymer and the film reactants include an indicator and a reactant from the group of a buffer, a stabilizer, a masking agent, a solubilizer and an internal reference dye. Methods for making the multiple-component sensor film and methods for monitoring the concentration of water soluble polymers in aqueous media are also provided. | 01-06-2011 |
20110129843 | METHOD FOR EVALUATING THE VIRULENCE OF PATHOGENIC BIPHASIC BACTERIA - A method for evaluating relative bacterial virulence of a biphasic bacteria in environmental systems includes measuring the concentration of DNA in the bacteria, measuring the concentration of RNA in the bacteria, determining a ratio of the concentration of RNA to the concentration of DNA and correlating the concentration ratio with a level of relative pathogenicity, wherein the bacteria is preferentially | 06-02-2011 |
20120164739 | DUAL HEAT STABILIZED POLYMER SENSOR FILMS - Methods are provided for improving the stability and shelf life of film sensors. The film sensors include a combination of polymeric matrix film material, analyte indicator, and solvent which has been heated in a first heat treatment application to volatilize most of the solvent and to solidify the analyte indicator to form the film sensor. The improvement comprises subjecting the film sensor to a second heat treatment to set the film and improve stability and shelf life. | 06-28-2012 |