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| Number | Title | Issue Date |
| 8093055 | Calibration card for photoluminescent oxygen sensors A calibration tool for use in combination with a photoluminescent oxygen-sensitive working probe and an analytical instrument capable of reading the working probe. The calibration tool is effective for achieving two-point calibration of the analytical instrument, an... | 01/10/2012 |
| 7713742 | Calibration gas delivery apparatus A calibration gas generation method and apparatus for generating a selectively humidified calibration gas to a measurement probe includes a delivery conduit having a conduit inlet adapted to receive a carrier gas stream and a conduit outlet for delivering a calibrat... | 05/11/2010 |
| 7404311 | Breath test simulator A breath simulator for supplying a breath test analyzer with a sample effluent of ethyl alcohol that controls headspace and adjacent effluent passageway temperature. ... | 07/29/2008 |
| 7390346 | System and apparatus for producing primary standard gas mixtures Provided is a novel system and apparatus for producing primary standard gas mixtures. The system includes providing a gas permeation device having a constant diffusion rate into a temperature controlled enclosure; connecting a supply source of a component to the per... | 06/24/2008 |
| 7281404 | Apparatus and method for testing gas detection instruments An apparatus for providing a test gas to a gas monitoring instrument having a window for admitting gas to a gas sensor therein, is formed from a mechanical adaptor open at a portion thereof and having walls constructed and arranged such that the mechanical adaptor r... | 10/16/2007 |
| 7275411 | Apparatus and method for testing gas detection instruments An apparatus for providing a test gas to a gas monitoring instrument having a window for admitting gas to a gas sensor therein, is formed from a mechanical adaptor open at a portion thereof and having walls adapted to the gas monitoring instrument such that the mech... | 10/02/2007 |
| 7183108 | Selection and uses of lactic acid bacteria strains modulating non-specific immunity The invention concerns lactic acid bacteria strains capable of regulating the production of NO and inflammatory cytokines by enterocytes, depending on the inflammatory condition of said enterocytes. The strains can also be incorporated in food supplements such as fe... | 02/27/2007 |
| 7129094 | Chemical agent simulant training composition A composition for simulating and evaluating chemical agent contamination which can be used to safely train military personnel in handling chemical agent contamination. It has a vapor generating component having a vapor pressure of from about 0.1 to about 30 mm Hg at... | 10/31/2006 |
| 7037725 | Method and system for creating a mercury halide standard for use in testing a mercury analyzer system A method and system are provided for creating a mercury halide standard, and for using that standard to test a mercury analyzer system. Gaseous elemental mercury of a known concentration from a gas cylinder and a halogen donor are fed to a reaction chamber where the... | 05/02/2006 |
| 6913928 | Hazardous chemical simulants Disclosed are hazardous chemical simulant compositions that can be used to simulate hazardous chemicals and methods for using hazardous chemical simulants. The compositions can include a phosphor, which emits visible light in the presence of ultraviolet light. The m... | 07/05/2005 |
| 6864094 | Method of preserving oxygen infusions The present invention provides a method for preserving an oxygen infusion containing an aqueous suspension of molecular assemblies which contain hemoglobin or a heme compound, by: a) modifying the molecular assemblies with polyoxye... | 03/08/2005 |
| 6852542 | Method and system for creating a mercury halide standard for use in testing a mercury analyzer system A method and system are provided for creating a mercury halide standard, and for using that standard to test a mercury analyzer system. Gaseous elemental mercury of a known concentration from a gas cylinder and a halogen donor are fed to a reaction chamber where the... | 02/08/2005 |
| 6844197 | Method for validating that the detection ability of a sensor array mimics a human nose detection ability The present invention relates to methods for matching and validating the response intensity of a sensor array to an odorant with the detection threshold of a human nose. ... | 01/18/2005 |
| 6835571 | Multi-analyte reference solutions with stable pO2 in zero headspace containers Multi-analyte reference solutions having a stable partial pressure of oxygen (pO2) in zero headspace packaging and methods for preparing such solutions are disclosed. The solutions have long shelf and use lives when stored at room temperature and are pack... | 12/28/2004 |
| 6812834 | Reference sample for generating smoky atmosphere A reference sample for testing fire detectors and a method of testing utilizing the reference samples. The reference sample comprises a fused mixture of pellets of the plastics usually found in aircraft cargo holds, with a heating element embedded in the sample. The... | 11/02/2004 |
| 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 (NH3) emission from cementitious slurries using the pozzolanic admixture. The assoc... | 09/14/2004 |
| 6653144 | Method and an apparatus for analyzing trace impurities in gases The present invention relates to a method and an apparatus for analyzing trace impurities in gases, which enable to analyze a very small quantity of impurities by only a simple operation, without making the column arrangement or the structure of flow comp... | 11/25/2003 |
| 6632674 | Method of testing gas detection instruments and associated apparatus A method for testing gas detection instruments includes providing at least two reagents, immobilizing at least one of the reagents into a matrix material, heating the matrix material until the matrix permits movement of the reagent and generating a gas re... | 10/14/2003 |
| 6632675 | Multi-analyte reference solutions with stable pO2 in zero headspace containers Multi-analyte reference solutions having a stable partial pressure of oxygen (pO2) in zero headspace packaging and methods for preparing such solutions are disclosed. The solutions have long shelf and use lives when stored at room temperature a... | 10/14/2003 |
| 6617164 | Method and apparatus for producing standard gases, carbon monoxide, and hydrogen for determining isotope relationships The invention, relates to a method for producing standard gases (CO and H2) for determining the isotope relationships of oxygen and/or hydrogen, in particular during on-line operation, with a sample being decomposed in a (hot) reactor (11) to p... | 09/09/2003 |
| 6566138 | Chemical agent simulant training composition A composition for simulating and evaluating chemical agent contamination which can be used to safely train military personnel in handling chemical agent contamination. It has a vapor generating component having a vapor pressure of from about 0.1 to about ... | 05/20/2003 |
| 6541052 | Methods and apparatus for sampling product aromas This invention provides methods and apparatus that enable consumers to experience, prior to purchase, the aroma of a finished product even though the product as sold is unfinished. Further, methods and apparatus provide users of a product with a reference... | 04/01/2003 |
| 6526802 | Portable breath test simulator A portable breath test simulator including a case having a jar support arm extending to one side of the top of the case. A jar containing a known water-alcohol solution is mounted on the bottom of the arm. The case and jar support the simulator. A magneti... | 03/04/2003 |
| 6376249 | Method for stabilizing low-concentration standard reference gas and low-concentration standard reference gas obtained by the same A method is provided for stabilizing a low-concentration standard reference gas. The stabilizing method includes the steps of treating an inner wall surface of a container with high-purity water for causing the inner wall surface to adsorb the high-purity... | 04/23/2002 |
| 6327889 | Device and method for introducing surrogates, particularly metal surrogates, into an exhaust stream, for simulating an exhaust stream, and for establishing a standardized source A convenient apparatus and method for inserting surrogate metal-entraining aerosols into exhaust stacks for the purpose of realistic dynamic testing of an emissions monitor. The aerosols contain elements required to be detected by the monitor. The 14 meta... | 12/11/2001 |
| 6123827 | Method for calibrating sensors used in diagnostic testing A method is disclosed for reliably calibrating a sensor used in diagnostic sensing of a predetermined parameter, e.g., CO2 partial pressure, O2 partial pressure, or pH, of a solution such as blood, the method compensating for expecte... | 09/26/2000 |
| 5980834 | Sample storage devices A sample storage device comprises a vial provided with an opening, a permion tube arranged within the vial, permeable to a fluid contained in the vial or the permeation tube, and having a first closed end and an opposite second end, and a septum closure ... | 11/09/1999 |
| 5789253 | Methods for rapid equalibration of dissolved gas composition An apparatus and method of equilibrating the dissolved gas composition of an aqueous fluid to reflect the predetermined gas composition contained in a gas equilibration reservoir. The equilibrated aqueous fluid can be used in a method of determining the c... | 08/04/1998 |
| 5780302 | Method of packaging oxygen reference solution using flexile package with inside valve A novel flexible package for an oxygen reference solution has been developed. This package is made from a laminated film including preferably polypropylene as the inner layer, aluminum foil as the middle layer, and polyester as the outer layer. The seams ... | 07/14/1998 |
| 5753508 | Method of testing a function of a detector at an inspection station and apparatus therefor In a method of testing a function of at least one detector at an inspection station (S) for containers, particularly in an inspection unit (R) for multi-trip bottles, a test gas is fed from a source (10) to the inspection station, or as the case may be to... | 05/19/1998 |
| 5731508 | Calibrating gas generator The invention relates to a calibrating gas generator for generating a calibrating gas with a pregiven concentration of a calibrating gas component. The calibrating gas generator includes two vessels through which gas can flow. These two vessels contain th... | 03/24/1998 |
| 5658451 | Method for calibration of a pH measuring element In a method for calibration of a pH measuring element whose ion-permeable, hydrophilic polymer layer is brought into contact with an aqueous solution prior to calibration, the aqueous solution is displaced or replaced by a gaseous calibrating medium, and ... | 08/19/1997 |
| 5609824 | Methods and apparatus for rapid equilibration of dissolved gas composition Disclosed is an apparatus and method of equilibrating the dissolved gas composition of an aqueous fluid to reflect the predetermined gas composition contained in a gas equilibration reservoir. The equilibrated aqueous fluid can be used in a method of dete... | 03/11/1997 |
| 5605664 | Methods and apparatus for rapid equilibration of dissolved gas composition Disclosed is an apparatus and method of equilibrating the dissolved gas composition of an aqueous fluid to reflect the predetermined gas composition contained in a gas equilibration reservoir. The equilibrated aqueous fluid can be used in a method of dete... | 02/25/1997 |
| 5493891 | Test gas generator for calibrating gas meters A device for generating a test gas e.g., ethanol has at least two series-connected containers, which are filled with a calibration solution. A carrier gas, which is enriched with the calibration substance present in the solution corresponding to the vapor... | 02/27/1996 |
| 5400637 | System and method of checking calibration of breath alcohol measuring instrument with barometric pressure compensation A system and method for checking the calibration of a breath alcohol measuring instrument by the use of alcohol standards all containing substantially identical concentrations of alcohol and the use of a calculator which generates an expected measured val... | 03/28/1995 |
| 5335534 | Functional testing method for toxic gas sensors The proper operation of an NDIR toxic gas sensor can be checked by using a non-toxic gas that has an absorption band that overlaps the absorption band used for measuring the toxic gas. The NDIR sensor cannot distinguish which of the two gases is responsib... | 08/09/1994 |
| 5238845 | Method for producing a CO2 calibration liquid A method for producing a liquid phase substance having a pre-established concentration of CO2 suitable for calibrating analytical instruments such as hemogasanalyzers consists in: preparing an aqueous solution of precisely known strength of a w... | 08/24/1993 |
| 5231030 | Temperature insensitive calibration system A multi-phase control and/or calibration system consists of a liquid phase containing an amount of dissolved oxygen (O2) in which the O2 partial pressure is made relatively temperature insensitive over an ambient temperature range of... | 07/27/1993 |
| 5213769 | Mixture forming method and apparatus The present invention provides an apparatus for forming a mixture containing a regulated, low concentration of a target component within a carrier fluid. In accordance with the present invention, the carrier fluid is passed through the bed including a com... | 05/25/1993 |
