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7614280 |
Quantitative fit test system and method for assessing respirator biological fit factors
A quantitative fit test (QNFT) system and method for assessing the biological fit factor (FF) performance of respiratory protective devices. The biological QNFT system includes the following three...
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7614279 |
Determination of pore structure characteristics of filtration cartridges as a function of cartridge length
A method for determining pore structure characteristics of a filtration cartridge includes the steps of placing a porometry test location isolating device in sealing contact with the filtration...
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7603252 |
Method and apparatus for calculating effective volume of diesel particulate filter
A method for calculating the effective volume of a diesel particulate filter invention may include: determining whether regeneration efficiency exists; determining, if regeneration efficiency...
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7594425 |
Methods and systems for integrity testing of porous materials
The invention relates to integrity testing of porous material using a plurality of gases and to an apparatus and system for performing the same.
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7592178 |
Filter integrity tester
An apparatus and method for testing the integrity of a filter under humid conditions is provided. The apparatus includes an injection assembly which is located on a first side of the filter and a...
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7591200 |
Method of detecting high-concentration region direction of pollutant in soil
A recovery phenomenon in which the concentration of a compound to be measured in soil increases again after reducing the concentration is utilized for changing the distribution state of the...
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7587927 |
Rapid integrity testing of porous materials
The invention relates to a rapid recirculation based integrity testing of porous material and to an apparatus and system for performing the same.
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7584061 |
Device for measuring permeate flow and permeate conductivity of individual reverse osmosis membrane elements
The present disclosure relates to a system comprising an integrated sensor for measurement of permeate flow and permeate conductivity of individual membrane elements while they are in operation in...
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7581430 |
Air velocity apparatus and system
An apparatus and a system is provided that may be utilized to determine air flow through an air filter and/or a plurality of air filters. The present invention utilizes a demonstration apparatus to...
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7578208 |
System and method for generating a gas sample of known and adjustable relative humidity
A system and method for providing a destination point with a gas having a selectable known humidity. A gas having an initial relative humidity is alternately directed in accordance with a duty...
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7569182 |
Filter assembly for a reprocessor
The present invention provides a method of operating a reprocessor that has a chamber for receiving items to be sterilized. The reprocessor is filled with water that has passed through a first and...
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7568379 |
Method of measuring porosity by means of ellipsometry and device for implementing one such method
The method for measuring the porosity of an element is performed by means of a measuring device comprising a measuring chamber in which the element is disposed, a solvent tank associated with an...
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7555934 |
Fluid permeation testing apparatus employing mass spectrometry
A fluid permeation testing apparatus provides for filling a first cavity of a test cell with a test fluid and filling a second cavity of the test cell with a challenge fluid. The challenge fluid...
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7552620 |
Fluid permeation testing method employing mass spectrometry
Fluid permeation testing involves filling a first cavity of a test cell with a test fluid and filling a second cavity of the test cell with a challenge fluid. The challenge fluid comprises at least...
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7517693 |
Method and apparatus for determining a molecular descriptor of absorption for a candidate compound
A method of determining a molecular descriptor of absorption for a candidate compound is disclosed. The method includes: providing a test solution comprising one or more candidate compounds;...
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7469572 |
Measurement of moisture vapor transfer rate
Systems and methods include a test media, a reservoir containing fluid, and a sensor compared to measure a parameter that is related to an amount of fluid in the test media. Systems and methods may...
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7464582 |
Method for determining the inlet capillary pressure of a porous medium
To perform at least an evaluation of the inlet capillary pressure value of a porous medium. From a displacement experiment on a sample of the medium, a curve of the volume of saturating fluid...
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7458251 |
Method for determining solvent permeability of films
A method is disclosed to measure the permeability of films or coatings towards solvents (e.g. water). First a substrate comprising an absorption or container layer is provided, preferably the...
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7430895 |
Apparatus and method for inspecting quality of molded foam parts
Apparatus and method is provided for reliably testing a quality level of bead fusion in molded foam parts. Such apparatus may be portable and hand-held, and the test procedure will not destroy or...
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7421885 |
Method for characterizing porous low dielectric constant films
A method and apparatus for determining pore size distribution and/or the presence of at least one killer pore in at least a portion of a porous film deposited upon a substrate are disclosed herein....
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7406857 |
Electronic humidity chamber for vapor desorption to determine high capillary pressures
The present invention relates to the use of an electronically controlled humidity chamber with temperature controls: to determine, by vapor desorption, high capillary pressures of core samples; to...
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7401501 |
Method and apparatus for determining liquid absorption of aggregate
A method of determining liquid absorption of an aggregate comprises providing a shaker apparatus, a vacuum source and a container; placing a sample of the aggregate in the container; adding liquid...
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7401499 |
Apparatus for permeability analysis
An apparatus for permeability analysis which transmits a testing fluid to the tubular specimen and measures the volume of the testing fluid permeating through the tubular specimen. The apparatus...
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7388373 |
Method of determining the permeability of an underground medium from NMR measurements of the permeability of rock fragments from the medium
Method of determining the permeability of an underground medium from NMR logs of the permeability of rock fragments from the medium, based on prior calibration of the permeability resulting from...
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7384510 |
Apparatus and method for determining the permeability of a circulating band in a paper machine
An apparatus and a method for determining the permeability of a circulating band, in particular a water-absorbing dewatering band in a papermaking machine. The apparatus is equipped with a nozzle...
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7368053 |
Membrane zeta potential measuring system
The present invention discloses a membrane zeta potential measuring system which comprises a first measuring course and a second measuring course. The provided system calculates the zeta potential...
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7367218 |
Centrifuge permeameter for unsaturated soils system
The present invention includes an apparatus, method and centrifuge permeameter system that includes a hydraulic permeameter adapted for use in a centrifuge; and an automated data acquisition...
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7360400 |
Device, method and computer programme product for carrying out integrity tests on filter elements
The invention relates to a device for carrying out integrity tests on filter elements by means of test gases, comprising a device housing ( 3 ), with an electronic controller ( 4 ), arranged...
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7334490 |
Method and apparatus for v-bank filter bed scanning
Embodiments of the invention generally related to a method and apparatus foe scanning a v-bank filter. In one embodiment, an apparatus for scanning a v-bank filter includes a hollow body having...
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7333892 |
Method of determining multiphase flow parameters of a porous medium taking account of the local heterogeneity
A method with application for evaluation or production of a reservoir for determining multiphase flow parameters of a porous medium such as a rock, from the interpretation of displacement...
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7320760 |
Cleaning efficiency testing method and apparatus for a filter in a filtering system
A method and an apparatus are provided for testing the efficiency of a cleaning procedure for a filter in a filtering system. After the cleaning procedure of the filter, the filter pores contain a...
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7319332 |
Method for determining of the formation factor for a subterranean deposit from measurements on drilling waste removed therefrom
Method and device for determining the formation factor of underground zones from drill cuttings. The device comprises a cell ( 1 ) associated with a device for measuring the electrical conductivity...
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7284411 |
Method of making a gas diffusion media and quality controls for same
The present invention discloses various methods in which a quality of a diffusion media for use in a fuel cell assembly can be qualitatively evaluated. The material constant, an internal contact...
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7281422 |
Method for borehole conductivity profiling
A method of using an everting borehole liner to perform fluid conductivity measurements in materials surrounding a pipe, tube, or conduit, such as a borehole below the surface of the Earth. A...
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7281410 |
Method for determining an effective peclet number for a membrane adsorber device
The method for determining an effective Peclet number for a membrane adsorber device includes the steps of (a) equilibrating the membrane adsorber device with an equilibration buffer at a known pH...
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7281409 |
Device, method and computer program product for carrying out integrity tests on filter elements
The invention relates to a device for carrying out integrity tests on filter elements by means of test gases, comprising a device housing ( 3 ), with an electronic controller ( 4 ), arranged...
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7278292 |
Method of assessing the product shelf life in a package
A method for the assessment of the product shelf life in a package, and a device for accelerating the permeation of a test gas into a package. To significantly reduce the test time and to...
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7257990 |
Accelerated ultralow moisture permeation measurement
By measuring ultralow moisture permeation through a barrier material sample at a temperature substantially above ambient, definitive values are produced on an accelerated basis that can be used to...
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7257989 |
Method and device for measuring physical characteristics of a solid porous sample
A method measures the physical characteristics of at least one solid porous sample (S) saturated with a first fluid by carrying out drainage or imbibition phases, in the presence of a second fluid...
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7249491 |
Apparatus for measuring the permeability of a circulating band in a paper machine
An apparatus for measuring the permeability of a circulating band, in particular of a dewatering band in a papermaking machine, having a nozzle from which a measuring fluid flows onto the band. In...
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7249424 |
Method and device for controlling the moisture or coating quantity profile in a paper web
The narrow-scale moisture profile of a paper web is controlled by profiling nozzles ( 11 ) of a profiling device ( 10 ) which cover part of the width of the web and desired variations of the...
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7246515 |
Filtration tester
A filtration tester has a scale, a collector disposed on the scale, a pump having an outlet aligned with an opening of the collector, and a force sensor connected to the pump.
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7219534 |
Method and apparatus for determining transpiration characteristics of a permeable membrane
A system and method for measuring the transpirational characteristics of a permeable polymeric membrane, particularly polymeric membranes used for bandages. The polymeric membrane is placed against...
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7216529 |
Method for controlling the integrity of a nanofiltration or reverse osmosis module, or module system
The invention concerns a method for controlling a nanofiltration or reverse osmosis module system designed for treating a supply fluid or for detecting living micro-organism leaks, each module...
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7210335 |
Automated clamp-on sample chamber for flow porometry and a method of using same
A sample chamber includes a movable upper chamber. The movable upper chamber includes a center bore opening to a bottom of the chamber, at least one port for introduction of gas under pressure to...
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7210334 |
Device for determining the fineness of mineral fibers
An apparatus for determining the fineness index of mineral fibers, designed to deliver the micronaire value of fibers. The apparatus includes a device for measuring the fineness index provided with...
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7201039 |
Axial flow scan testable filter system
A filter system having in-situ scan capabilities is provided. In one embodiment of the invention, the system includes a downstream probe which may be rotated to scan the field of a filter installed...
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7178384 |
Method and apparatus for measuring ultralow permeation
Method and apparatus for testing ultralow moisture permeation through a sample such as a thin barrier film by exposing one surface of a sample to be tested for moisture permeation to a...
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7174770 |
Method and device for automatic determination of the permeability of a porous material having alternating levels of porosity
A method and device for using a permeameter comprising a measuring head ( 2 ) opposite which the sheet or strip ( 1 ) is displaced step by step. The method and device can comprise a registration...
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7171843 |
Electronic humidity chamber for vapor desorption to determine high capillary pressures
The present invention relates to the use of an electronically controlled humidity chamber with temperature controls: to determine, by vapor desorption, high capillary pressures of core samples; to...
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