Abstract: A system for building a gas processing apparatus includes a compressed gas source, a pressure modulator in communication with the gas source, and a chamber configured to receive a gas permeable material. The chamber is further configured with a first chamber area on one side of the material and with a second chamber area on a second side of the material. A sensor is configured to measure over time a pressure differential between the first and second chamber areas. A memory stores performance characteristic data for a plurality of gas processing apparatus. A processor converts the pressure differential to a material characteristic of the gas permeable material, and compares the material characteristic to at least one selected performance characteristic of the gas processing apparatus.

Abstract: A measuring device for measuring the fineness and maturity of cotton fibers is provided. The measuring device includes a measuring chamber; a supply conduit; a flow regulator arranged along the supply conduit; a first pressure sensor upstream of the flow regulator; a second pressure sensor downstream of the flow regulator; an electronic proportional pressure regulator for regulating the air pressure in the supply conduit; and an electronic processing and control unit programmed to control the electronic proportional pressure regulator as a function of the detections of the first sensor and of the second sensor or of the second sensor alternatively and respectively to keep the difference between the air pressure upstream and downstream of the flow regulator or the air pressure entering the measuring chamber substantially constant and equal to a predeterminable value.

Abstract: The invention discloses a high temperature and high humidity testing device and a high temperature and high humidity testing system. The high temperature and high humidity testing device comprises: a test platform composed of a work area and a non-work area, the work area is used for carrying a under-test portion of a display panel, and the non-work area is used for carrying a non-test portion of the display panel; and a sealing cover arranged above the work area, wherein the sealing cover and the test platform jointly form a sealed chamber in the work area, the test platform is provided with a gas guide through groove in the work area, and the gas guide through groove is used for delivering high temperature and high humidity gas to the sealed chamber.

Abstract: A method for characterizing properties of a sample that employs a test apparatus including an isolated sample cell and pressure sensor where the isolated sample cell is loaded with the sample and gaseous test fluid to perform a number of different tests to derive properties of the sample. The tests can be performed over different parameters, such as different applied pressures of the test fluid to derive parameters related to apparent gas permeability of the sample as a function of applied pressure, different gaseous test fluids to characterize dependence of permeability of the sample on mean free molecular path or pressure, with both adsorptive and non-adsorptive test gases to characterize at least one property related to adsorptive interaction between the adsorptive test gas and the sample, and with samples of varying saturation levels to derive a measure of at least one property of the subsamples at corresponding saturation levels.

Abstract: A device for measuring permeability of a filter cartridge seal includes a blocking member for blocking an input to the filter cartridge and a housing for tightening the seal. A removable chamber wall is configured to form a sealed chamber with the housing and the blocking member. Pressure in the sealed chamber is varied to test the seal and to detect leaks.

Abstract: A holding jig has a tubular jig base member, and a tubular expansion/contraction member disposed on an inner peripheral surface side of the tubular jig base member. Both end sides of the tubular expansion/contraction member are fixed to both end sides of the tubular jig base member along the whole periphery. A configuration of an inner peripheral surface of the tubular expansion/contraction member is smaller than a surface configuration of a pillar-like body (a honeycomb structure) to be held. On the other hand, a configuration of an inner peripheral surface of the tubular jig base member is larger than the surface configuration of the pillar-like body (the honeycomb structure) to be held.

Abstract: A therapeutic device to release a therapeutic agent comprises a porous structure coupled to a container comprising a reservoir. The reservoir comprises a volume sized to release therapeutic amounts of the therapeutic agent for an extended time when coupled to the porous structure and implanted in the patient. The porous structure may comprise a first side coupled to the reservoir and a second side to couple to the patient to release the therapeutic agent. A plurality of interconnecting channels can extend from the first side to the second side so as to connect a first a plurality of openings on the first side with a second plurality of openings on the second side.

Abstract: A full petrophysical rock characterization of a rock sample in a single workflow uses a separator containing two immiscible fluids. The fluids form a fluid interface. A video camera monitors the height of the fluid interface. Current electrodes and potential electrodes are electrically connected to the rock sample. An impedance meter makes measurements across the current electrodes and the potential electrodes. A tubing is attached to one end of the rock sample and to one end of the separator and transports one of the immiscible fluids therebetween. Another tubing is attached to the other end of the rock sample and to the separator and transports the other immiscible fluid therebetween. Yet another tubing transports an immiscible mixture of the immiscible fluids from the rock sample to the separator. Pressure gauges measures the pressures in the tubings. Pumps are disposed inline with the certain tubings.

Abstract: A method of inspecting a component comprising a cellular structure bonded to a carrier substrate to form a matrix of open-ended cells is described. The method comprises: submerging the component in an inspection liquid disposed within a pressure vessel; changing the pressure within the pressure vessel; withdrawing the component from the inspection liquid; and determining whether the cells of the component are filled with the inspection liquid. A corresponding inspection apparatus is also described.

Abstract: A method of determining an internal volume (V) of a filter or bag device includes pressurizing the device to a first pressure (p1) lower than a proof pressure by supplying a test gas, pressurizing the device to proof pressure (pp), and at the same time, measuring the mass flow (m) or the volumetric flow of test gas, determining the gas temperature (T), and determining the internal volume (V) based on the equation for ideal gases, such that: V=m×R×T/(pp?p1) where V is the internal volume, m is the mass flow, R is the gas constant, T is the gas temperature, pp is the proof pressure and p1 is the first pressure. A computer program product and a testing apparatus for performing the above-mentioned method also are provided.

Abstract: An adsorption characteristic measuring apparatus is configured to: acquire a unit-time leak pressure value from a pressure increase value of an internal pressure value of a sample tube caused by an non-adsorption gas leaking from the outside of a fitting portion into an inner space of the sample tube; acquire a pressure value at which a temporal change of the internal pressure value of the sample tube assumes an equilibrium state when an adsorption gas present in the reference volume portion is supplied into the sample tube and the sample tube is in a closed state; calculate a pressure value after correction of a real leak pressure value is performed on a measured equilibrium pressure value, as a true equilibrium pressure value, the real leak pressure value being obtained in such a manner that the unit-time leak pressure value is multiplied by a leak time; and calculate an adsorption isotherm.

Abstract: A method for characterizing properties of a porous sample that employs a test apparatus including a sample cell and associated pressure sensor having a configuration that measures pressure of the isolated sample cell. The porous sample is divided into a number of pieces, which are loaded into the sample cell. The test apparatus is configured to perform a sequence of test operations whereby the loaded isolated sample cell is filled with test fluid under pressure and the pressure sensor is used to generate and store pressure data over time. A data processing system processes the pressure data in conjunction with a computational model that includes a set of pressure curves with a number of curve-related variables and associated values in order to identify a matching pressure curve, and processes the variable values for the matching pressure curve in order to derive bulk properties of the porous sample.

Abstract: An apparatus for evaluating gas barrier properties, containing a polymer-containing support for supporting a sample, a chamber on a permeation side, and a detection unit, in which the support is connected with an opening of the chamber on the permeation side, and in which glass transition point of the polymer contained in the support is 100° C. or higher.

Abstract: Embodiments of the present invention provide moisture measuring systems and methods. According to one embodiment of the present invention, a sealable compartment is used in which a specimen containing liquid can be inserted, such that all of the specimen is contained within the compartment. The relative humidity in the compartment is measured over a duration of time, which can be used to calculate the amount of liquid leaked by the specimen. Embodiments of the present invention can be utilized, for example, to calculate the leakage rate of water-carrying hardware of a cooling system, without having to create a membrane or other isolated sample of materials.

Abstract: An apparatus and method for measuring molecular diffusivity in porous powders or minerals, e.g., the microporous synthetic minerals used for gas separation and chemical catalysis, were invented that allows a varying pressure in the gas around the powder during the measurement. This obviates the need for the pressure to be constant and the attendant complicated component parts. A mass balance model equation of the sample cell with the diffusivity as an adjustable parameter is used to deduce the sample cell pressure change versus time (uptake curve) until the equilibration of gas diffusion into the powder. A numerical analysis method is used to solve the mathematical model to compute a simulated uptake curve. Curve fitting of the simulated and measured uptake curves is used to optimize the diffusivity parameter, which gives the measured diffusivity. The apparatus and method are simple, easy to use, and automation is also simple.

Abstract: A methodology and system determine properties of a sample substance, such as a liquid/foam used to control sweep homogeneity problems in an earth formation. The methodology and system utilize a core of formation simulation material placed in a container. An injection system is coupled to the container and enables placement of both the sample substance and an injection fluid into the container. The injection fluid is injected under pressure and moves the sample substance through the core. A data acquisition system is employed to measure parameters such as pressure differentials along the core as the sample substance propagates through the formation simulation material. The pressure differentials may be evaluated over time by the data acquisition system to determine fluid breakthrough properties of the sample substance.

Abstract: A method for characterizing properties of a manufactured rock sample that employs first and second test apparatus. The first test apparatus includes a sample holder and associated pressure sensors, wherein the sample holder allows for a pulse of test fluid to flow through the sample, and the pressure sensors measure pressure upstream and downstream of the sample as the pulse of test fluid flows through the sample. The second test apparatus includes a sample cell and associated pressure sensor, wherein the sample cell has a configuration where the sample cell is isolated and filled with test fluid under pressure and the pressure sensor measures pressure of the isolated sample cell. The first and second test apparatus are used to measure bulk properties of the sample. The sample is partitioned into pieces, and the second test apparatus is used to measure properties for different size-groups of such sample pieces.

Abstract: A test apparatus (and method of operation) for characterizing properties of a sample under test (such as porous material, for example, samples of reservoir rock) that operates in conjunction with a source of test fluid. The test apparatus includes an intake valve fluidly coupled to the source of test fluid, a reference cell fluidly coupled to the source of test fluid via the intake valve, a sample cell that holds the sample under test, an isolation valve fluidly coupled between the reference cell and the sample cell, an exhaust port, an exhaust valve fluidly coupled between the sample cell and the exhaust port, a first pressure sensor associated with the reference cell for measuring pressure within the reference cell, and a second pressure sensor associated with the sample cell for measuring pressure within the sample cell. The method of operation includes calibration procedures to compensate for systematic measurement errors.

Abstract: An automated test apparatus for risk and integrity testing for pharmaceutical filtration membranes, including at least the following components: a liquid injection inlet, a pump, a fluid pressure gauge, a gas pressure gauge, a plurality of solenoid valves, a plurality of membranes, a gas pressure regulator valve, a pharmaceutical product bottle, and a bubble generation bottle. The automated test apparatus of the present invention is controlled by computer software in connection with an automatic pharmaceutical synthesis apparatus for automated testing. In use of the automated test apparatus of the present invention, it needs only to start the operating system of the automated test apparatus for membrane risk and integrity test after the completion of the automatic pharmaceutical synthesis. The membrane risk and integrity test can be accomplished in a short time by measuring pressures of gas and liquid with pressure gauges deposed online concurrently.

Abstract: An apparatus for evaluating gas barrier properties, containing a support (2) for supporting a sample, a chamber on a permeation side, and a detection unit, in which the support is connected with an opening of the chamber on the permeation side, and in which water vapor-transmission rate of the support is 1×10?10 mol/m2sPa to 1×10?14 mol/m2sPa.

Abstract: A method for predicting at least one property of a geological formation may include generating mapping function values relating a plurality of reference elemental compositions to corresponding reference properties thereof based upon at least one non-linear mapping function. The method may further include determining a sample elemental composition of at least one sample associated with the geological formation and performing, using a processor, an interpolation to map the sample elemental composition to at least one sample property based upon the mapping function values and the at least one non-linear function.

Abstract: An operating platform includes a first sensing assembly and a gas supply device. The gas supply device includes a second sensing assembly configured to detect the water content and oxygen content of a protective gas inputted from an input terminal; and a first electromagnetic valve. With the use of more than one sensing assemblies, the water content and the oxygen content of the protective gas provided by the gas supply device can be further detected, so as to solve the problems of inaccurate detected values and abnormalities.

Abstract: Embodiments of the present invention provide moisture measuring systems and methods. According to one embodiment of the present invention, a sealable compartment is used in which a specimen containing liquid can be inserted, such that all of the specimen is contained within the compartment. The relative humidity in the compartment is measured over a duration of time, which can be used to calculate the amount of liquid leaked by the specimen. Embodiments of the present invention can be utilized, for example, to calculate the leakage rate of water-carrying hardware of a cooling system, without having to create a membrane or other isolated sample of materials.

Abstract: Properties of a porous solid sample 19, which may be a core of rock taken from below ground are carried out using apparatus which performs both nuclear magnetic resonance (NMR) and porosimetry measurements. The apparatus has a magnet 11,12 providing a magnetic field and a radio frequency coil 20 for transmitting and/or receiving electromagnetic radiation so as to bring about NMR in the magnetic field, a pressure vessel 14, 15 to hold a sample 19 within the magnetic field, a supply of a non-wetting liquid connected to the vessel, means to apply pressure to the non-wetting liquid to force liquid into pores of the sample 19 means to measure applied pressure of the non-wetting liquid and means to measure volume thereof taken up by the sample. The pressure of non-wetting liquid may be increased in steps, using intruded liquid volume at each step to give a measurement of pore throat size using NMR at each step to give a measure of pore size such as diameter of equivalent sphere.

Abstract: A system for testing at least one air filter element is provided. The system includes a test rig, wherein the test rig includes an elongated duct, and at least one measurement device coupled to the duct. The at least one measurement device is configured to measure at least one characteristic representative of a condition within the duct. At least one air filter element is coupled within the test rig. At least one first salt spray test is performed on the at least one air filter element. The collected salt spray water and equivalent amount of dry salt remaining in the test rig are quantified. At least one second salt spray test is performed on the at least one air filter element, wherein the at least one air filter element is dust loaded prior to the at least one second salt spray test.

Abstract: A quantity of soot trapped in a particulate filter in an engine exhaust system is calculated for use in a regeneration control strategy by drawing electric current from an electric power supply through a circuit which comprises in series an internal portion of the particulate filter and an electric impedance external to the filter. At least one electric measurement device connected to the circuit provides circuit-related data sufficient to enable a processor to calculate temperature-adjusted electric resistance of soot trapped in the internal portion of the particulate filter by calculating non-temperature-adjusted electric resistance of soot trapped in the internal portion of the particulate filter and temperature-adjusting a calculation of non-temperature-adjusted electric resistance of soot trapped in the internal portion of the particulate filter based on temperature data from a source of temperature data indicative of an internal temperature of the particulate filter.

Abstract: A test system for equipment using fuel, including a closed supply circuit of the equipment configured to supply contaminated fuel to the equipment is provided. The circuit includes at least one tank including fuel, and a pollution module including on or more vats including fuel contaminated by solid contaminants. The module is configured to introduce contaminated fuel to a section of the supply circuit in which the fuel extracted from the tank circulates towards the equipment. The module also includes an agitating tool configured to take contaminated fuel from the vat and return it to the vat, so as to agitate the contaminated fuel in the vat.

Abstract: A therapeutic device to release a therapeutic agent comprises a porous structure coupled to a container comprising a reservoir. The reservoir comprises a volume sized to release therapeutic amounts of the therapeutic agent for an extended time when coupled to the porous structure and implanted in the patient. The porous structure may comprise a first side coupled to the reservoir and a second side to couple to the patient to release the therapeutic agent. A plurality of interconnecting channels can extend from the first side to the second side so as to connect a first a plurality of openings on the first side with a second plurality of openings on the second side.

Abstract: A method of reducing uncertainty, which exactly finds the hydraulic conductivity and the specific storativity of a rock sample in pressure pulse-decay measurement. Axial and confining pressures are applied to the rock sample, and upstream and downstream reservoirs are connected to the rock sample. Coordinate values representing minimum values of a contour of a graph of an objective function, in which the hydraulic conductivity and the specific storativity obtained through the pressure pulse-decay measurement scheme to apply pressure pulses from the outside are expressed in horizontal and vertical axes are found from the graph. The coordinate values are set as the hydraulic conductivity and the specific storativity of the rock sample. Graphs of objective functions obtained by repeating the pressure pulse-decay measurement while changing boundary conditions are shown in overlapped, thereby reducing the uncertainty of the hydraulic conductivity and the specific storativity of the rock sample.

Abstract: Sensing devices based on a surface acoustic wave (“SAW”) device coated with an absorbent crystalline or amorphous layer for detecting at least one chemical analyte in a gaseous carrier. Methods for detecting the presence of a chemical analyte in a gaseous carrier using such devices are also disclosed. The sensing devices and methods for their use may be configured for sensing chemical analytes selected from the group consisting of water vapor, carbon dioxide, methanol, ethanol, carbon monoxide, nitric oxide, nitrous oxide, organic amines, organic compounds containing NO2 groups, halogenated hydrocarbons, acetone, hexane, toluene, isopropanol, alcohols, alkanes, alkenes, benzene, functionalized aromatics, ammonia (NH3), phosgene (COCl2), sulfur mustard, nerve agents, sulfur dioxide, tetrahydrofuran (THF) and methyltertbutyl ether (MTBE) and combinations thereof.

Abstract: A stereo device testing method includes the following steps. Firstly, a stereo device is fixed, and a gas is continuously inputted into an inner space of the stereo device. After a predetermined time period, an internal pressure value of the inner space of the stereo device is detected. By judging whether the internal pressure value is higher than or equal to a default pressure value, the tester may determine whether the stereo device is qualified or not. After the stereo device is tested, the manufacturer of the stereo device may repair the gas leakage position. Since the influence of the gas leakage condition on the resonant effect is minimized, the sound quality of the stereo device is enhanced.

Abstract: A device for measuring the activity of a liquid in a complex medium and an associated method, the device comprising a sealed enclosure in which the complex medium is intended to be placed and means for maintaining this enclosure at a constant temperature T, characterized in that it comprises: a means (14) for modifying the total volume of the enclosure; a pressure sensor (22) for measuring the total pressure in the enclosure; and means (24) for calculating the activity of the liquid in the complex medium from the temperature T, from the total volume of the enclosure and from the total pressure in the enclosure.

Abstract: The invention relates to a method and a device for determining the permeation rate of barrier elements and ultra-barrier elements according to an isostatic permeation measurement method. In the process, the convective mass transfer of a permeate permeated through a barrier element is replaced by a diffusion-controlled mass transfer along a diffusion path in a subsequently arranged measurement chamber with a hollow conducting element and permeate sink. The permeate sink ensures that permeate is removed continuously, and so a mass flux equilibrium of the permeate is set through the barrier element and through the diffusion path. The concentration gradient of the permeate and, from this, the permeation rate of the barrier element is then determined by non-invasive determination of the concentration of the permeate along the diffusion path.

Abstract: An assembly for the test chamber of a wellbore fluid testing apparatus for simulating fractures in a wellbore is provided comprising base plate of a first diameter having an aperture therethrough configured to be removably secured within the test chamber. A solid end plate of a second diameter smaller than the first diameter is provided that is removably secured to the base plate. One or more intermediate plates is provided that is located between the base plate and the end plate, each intermediate plate also having an aperture therethrough. At least one shim or spacer is provided to space the intermediate plates from any adjacent intermediate plate and/or to space the end plate from the adjacent intermediate plate. The spacer is configured to be removably secured to the assembly and to permit fluid flow in in the assembly through the aperture in the base plate and the opposed face of the intermediate plate and an adjacent intermediate plate or the base plate.

Abstract: A simulation system (101) includes an X-ray CT device (11) that obtains a tomographic image of a porous sample, and a simulation device (14) that simulates a mercury intrusion method by processing a laminated tomographic image of the sample. The simulation device (14) includes a modeling means which processes the laminated tomographic image of the sample, and which models an internal structure of the sample, a minimum-diameter obtaining means that obtains a minimum entrance diameter when mercury enters in a pore of the sample at a predetermined pressure based on a surface energy of the sample and a pressure, and a means that simulates a liquid entering in the interior of the pore from one surface of the sample based on a diameter of the pore of the modeled sample and the minimum entrance diameter.

Abstract: Disclosed is a holder for measuring a permeability of an unconsolidated sediment. The holder includes a sediment installation part having a solid sediment attached to opposite ends of an unconsolidated sediment along a longitudinal direction; a transverse pressure supply part installed to surround the sediment installation part to supply a predetermined transverse pressure to the sediment installation part by using a fluid supplied from the outside; and a longitudinal pressure supply part installed at opposite ends of the transverse pressure supply part to cover opposite ends of the sediment installation part to be moved along a vertical direction so as to supply a predetermined longitudinal pressure to the sediment installation part.

Abstract: An adsorbent construction for use in an electronic enclosure is disclosed. In certain embodiments the adsorbent construction comprises an adsorbent material and a polymeric material substantially surrounding the adsorbent material. The polymeric material regulates the flow of water vapor into and out of the adsorbent material. In example implementations one or more openings are present in the polymeric cover, the openings permitting flow of water vapor through the polymeric cover. A filter material can cover the opening in the polymeric cover. The adsorbent material can comprise, for example, activated carbon, silica gel, or a combination thereof.

Abstract: The invention relates to accelerated mixed gas integrity testing methods, devices, and systems for integrity testing wetted single and multi-layered porous materials, whereby the testing method is non-destructive to the porous materials being tested. The accelerated mixed gas integrity test method includes one or more of the following components: i) a permeate side gas purge component; ii) a permeate side volume reduction component; and iii) a permeate side circulation component. The invention is directed towards reducing the length of time necessary to complete the integrity testing of single and multi layered porous materials, elements and membranes.

Abstract: A core holder comprises a plurality of fluid flow lines, a housing, a core sleeve disposed within the housing, an end cap coupled to a first end of the core sleeve and a first end of the housing, and an injector assembly disposed within the housing and coupled to a second end of the core sleeve. The injector assembly comprises a plurality of fluid passages coupled to the plurality of fluid flow lines, and a chamber in fluid communication with the plurality of fluid passages and an interior of the sleeve.

Abstract: Methods of testing a honeycomb filter include the step of wetting the outer peripheral surface of the honeycomb filter to enhance the flow of fog through outer peripheral channels of the honeycomb network of channels. In further examples, methods include the step of obstructing a flow of fog through inner peripheral channels to enhance the flow of fog through the outer peripheral channels of the honeycomb network of channels. In further examples, apparatus for testing a honeycomb filter include a flow diverter with a blocking member.

Abstract: Disclosed is an apparatus and method for testing a cemented bonding with the formation under wellbore pressure conditions. The apparatus comprises a pressure chamber containing a core of formation material. The cement material to be tested is allowed to set or bond to one side of the core while formation fluids under wellbore pressure conditions are present on the other side. Leakage of formation fluids is measured to evaluate the quality of the interface between the cement and formation materials.

Abstract: A testing apparatus and method includes a PTFE layer; placing a sorbent pad on the PTFE layer; applying contaminants to a protective material; placing the protective material adjacent to the sorbent pad with the side having contaminants opposite the sorbent pad; applying a weight to the protective material causing the protective material to contact the sorbent pad, and determining any permeation of contaminants through said protective material causing exposure on the sorbent pad to the contaminants; and measuring a level of contamination of the sorbent pad upon exposure to any contaminants which permeated the protective material. A second PTFE layer may be placed in between the weight and the protective material. Additionally, another PTFE layer may be placed in between the protective material and the sorbent pad. The protective material may include any of air impermeable materials, air permeable materials, and semi-permeable materials.

Abstract: A sample of porous material is placed in a calorimeter cell and a pressure in the cell is increased starting from a pressure value of a first step by filling the cell with a wetting fluid. Measurements are taken of a heat flow to the cell and a fluid volume at each step. Then, the pressure in the cell is decreased to the pressure value of a first step with continued measurements of the heat flow to the cell. Increase and following decrease of the fluid pressure in the cell are repeated at least once. Then a temperature in the cell is decreased below a wetting fluid crystallization point. Once the fluid has been fully crystallized in sample pores, the temperature in the cell is increased above a wetting fluid melting point. Wetting limiting angle of the pores filled with fluid, and pore sizes are determined based on the results of heat flow measurements with due consideration of heat effect of fluid compression.

Abstract: The invention includes methods for testing membranes and membrane-based systems by introducing particles into a feed liquid passing across the surface of a membrane wherein the particles have a size larger than the nominal cut-off of the membrane, and measuring the presence of the particles within a permeate solution which passes through the membrane. In one embodiment, the particles are selected from those which dissolve within the permeate solution after being measured. In another embodiment, the particles are selected from inorganic salts. Many additional embodiments are disclosed.

Abstract: A porous medium sensor comprises: a sensing portion, a gas exchange tubing, a gas permeable protection sleeve, and a water impermeable distal end collar. The sensing portion is at least partially insertable in a porous medium and has a housing with a gas exchange aperture defined therein and a parameter sensor mounted in the housing for measuring a parameter of the porous medium in which the sensing portion is insertable. The gas exchange tubing is in gas communication with the gas exchange aperture of the sensor portion and has a water-repellent membrane inserted therein. The water-repellent membrane prevents water infiltration in the housing through the gas exchange aperture. The gas permeable protection sleeve covers at least a section of the gas exchange tubing. The water impermeable distal end collar covers a distal end of the gas permeable protective sleeve and the water-repellent membrane.

Abstract: The present invention relates to an apparatus and method of measuring effective porosity of various media such as rock or soil using radon that is an inert gas. An apparatus of measuring porosity according to the present invention includes: a gas component detector having two ports and configured to measure a concentration of a predetermined gas; a gas vessel having two ports and configured to accommodate the predetermined gas; a medium vessel having two ports and configured to accommodate a medium, of which the porosity is desirous to be measured; pipe lines connecting the ports of the gas component detector, the gas vessel and the medium vessel; and valves installed on the pipe lines.

Abstract: There is disclosed a filter inspection method which is excellent in sensitivity to detect defects of a filter and in operation efficiency. The filter inspection method includes a humidifying step of exposing a porous filter to moisture-containing air; and a detecting step of introducing water particles into the filter in a wet state through the humidifying step, to detect the water particles which pass through and flow out of the filter, thereby detecting defects of the filter.

Abstract: A water or liquid substance filtration device is disclosed which removes microorganisms and organic contamination and sterilizes the containers and water lines after the unit. The unit is portable, or can be mounted stationary. The unit has a five-stage filtration and sterilization system controlled by an independent onboard computer system that can link to a central computer system to keep track of all independent units. The unit will physically filter out of the water contaminants that can be reused, destroyed, or flushed down a safe drain. It can also be modified to filter for a certain size of particulate, making recovery of certain substances possible. The unit has a self-diagnostic system that can determine if the unit is operating properly and can shut down a part thereof if one of the capillary units fails. The unit uses ozone to disinfect containers and water lines.

Abstract: The present disclosure is a filtration monitoring system. Filtration monitoring system may include a sensor configured to measure a characteristic of usage of a monitored filter. The sensor may be communicatively coupled to a controller which is configured to transfer measured data to a server of the filter monitoring system. Server may be configured to store historical data regarding representative filter usage and may determine a predicted expiration time for a monitored filter which may be adjusted based upon the measured data from the sensor.

Abstract: Compression testing apparatus for analyzing porous materials includes a cylindrical channel having a central bore, solid outside, upper and lower walls, the inner edge of the channel being open to the inner bore. A flexible sealing member having a central bore concentric to the bore of the cylindrical channel opposes the edge of the channel. The flexible walls of the flexible member overlap with and are sealingly affixed to the upper and lower surfaces of the channel. The central bore of the flexible sealing member thus forms a sample chamber for porous material to be tested. Top and bottom sealing members cover the sample chamber and a gas inlet enters through the outside wall of the cylindrical channel for applying biaxial or radial compression on the test material. Triaxial compression is applied with addition of a weight or piston sealingly engaged within the central bore of the flexible sealing member.