Abstract: Embodiments of the present disclosure relate to a heating, ventilation, and/or air conditioning (HVAC) system that includes a first control configured to control a supply of power to a plurality of compressors based on an air flow through the HVAC system exceeding a first threshold, and a second control configured to supply power to a subset of compressors of the plurality of compressors based on the air flow through the HVAC system exceeding a second threshold while being below the first threshold.

Abstract: A method for identifying particulates in the air, including drawing a predetermined volume of air into a housing defining an airway, flowing the predetermined volume of air over a first adhesive capture member positioned in the airway to yield a first test sample, generating a first optical image of the first test sample with a camera, storing the first optical image in a memory, analyzing the first optical image with the microprocessor to identify captured particulates, automatically counting the identified particulates, storing the first adhesive capture member to preserve the first test sample, and positioning a second adhesive capture member in the airway.

Abstract: Embodiments of the present disclosure provide for collection devices, methods of making collection devices, methods of collecting gases and aerosol particles, and the like.

Abstract: A device includes a cartridge containing a filter material. An insert extends through at least a portion of the filter material. The insert has gas sample path with an opening to provide a sample of air that is representative of the saturation of the filter material. A return path may be included in the insert to return sampled gas to the filter material. A gas mask contains a gas sensor and coupled to the cartridge, which may be replaced when saturated.

Abstract: The present invention is adapted to be provided with: a first sampling line for sampling raw exhaust gas; a first concentration measuring part that measures the concentration of the predetermined target component contained in the raw exhaust gas; a second sampling line for sampling diluted exhaust gas; a second concentration measuring part that measures the concentration of the target component contained in the diluted exhaust gas; and an arithmetic unit that, with use of first measured concentration, second measured concentration, and a diluted exhaust gas flow rate, calculates a raw exhaust gas flow rate, wherein in a state where the first sampling line and the first concentration measuring part are heated, the first concentration measuring part measures the concentration of the target component contained in the raw exhaust gas.

Abstract: A method for removing chloride from samples containing volatile organic carbon, wherein a chloride containing sample is mixed with a difficultly volatile acid, wherein hydrochloric acid gas arises, which is present in dissolved form in a sample-acid mixture and then the hydrochloric acid gas is purged by a carrier gas from the sample-acid mixture, wherein the hydrochloric acid gas is removed from the carrier gas following the purging and the carrier gas is fed back to the sample-acid mixture. In order during the hydrochloric acid purging largely to suppress the driving out of easily volatile organic compounds, the sample-acid mixture has a temperature of approximately 3° C. to 30° C., wherein, following the purging from the sample-acid mixture, the hydrochloric acid gas is removed from the carrier gas by absorption with water.

Abstract: This technology relates to the enlargement by water condensation in a laminar flow of airborne particles with diameters of the order of a few nanometers to hundreds of nanometers to form droplets with diameters of the order of several micrometers. The technology presents several advanced designs, including the use of double-stage condensers. It has application to measuring the number concentration of particles suspended in air or other gas, to collecting these particles, or to focusing these particles.

Abstract: The problem to be solved by the present invention is to provide a monolith adsorbent which can adsorb a target sample easily in a short time or regardless of whether the amount of the sample is small or large and extract the sample with a small amount of solvent, and easily secure the sample necessary for analysis, and a method and an apparatus for adsorption and retention using the same. The present invention is a monolith adsorbent formed by allowing a monolith structure body to contain an adsorbing material such as activated carbon or graphite, exposing the adsorbing material on the surface of the structure body and further surface-treating the surface of the monolith structure body with a hydrophobic or hydrophilic compound or a resin.

Abstract: An off gas extraction system cleans common sources of off gas, such as storage tanks and polluted soils. Off gas is extracted, followed by compression and condensation. Compression and condensation produce an off gas that can be reintroduced as a treated gas into the off gas source. Alternatively, a regenerative absorber cleans the treated gas by adsorbing residual chemical vapor and concentrates the removed chemical vapors and reprocesses them. If the treated gas is not reintroduced into the off gas source, conventional scrubbers may used on the back end of the system to produce a final exhaust as prescribed by environmental regulation. Methods of accomplishing the same are similarly provided, including novel methods for degassing storage tanks and treating polluted soils to meet current environmental regulations, as well as green technology and sustainability initiatives.

Abstract: A marine engine exhaust system has an exhaust conduit conveying engine exhaust gas from upstream to downstream, a sensor sensing oxygen content of the exhaust gas in the conduit, and a shield located in the conduit. The shield is configured to shield the sensor from deleterious effects of liquid when liquid and exhaust gas is reverted in the exhaust conduit from downstream to upstream.

Abstract: The present technology provides an air pre-treatment and monitoring device that includes an inlet port configured to receive an air flow and an outlet port configured to expel the air flow. The illustrative air pre-treatment device further includes a multiple-stage filter arranged between the inlet and outlet ports and that is configured to filter particles from the air flow.

Abstract: The invention relates to a device for preparing a gas flow for introduction thereof into a mass spectrometer, wherein the gas flow contains one or more analytes and has helium as carrier gas. According to the invention, a selective separating device is provided for separating off a part of the carrier gas from the gas flow (10), to form a residual gas flow (11) and a separated carrier gas flow (12). A higher fraction of the analyte is present therein than in the gas flow and in the separated carrier gas flow there is a lower fraction of the analyte.

Abstract: A system of sampling a fluid comprises a fluid separator having a central axis. The fluid separator includes an insulating sleeve. In addition the fluid separator includes a separator assembly coaxially disposed within the sleeve. Further, the fluid separator includes an annulus radially disposed between the sleeve and the separator assembly. The separator assembly includes a conduit, a support rod coaxially disposed within the conduit, and a plurality of separator members coupled to the support rod within the conduit.

Abstract: The present invention relates to an air filtering system capable of enhancing inspection convenience, which is disposed in the ceiling and comprises a housing, a filter, a first sampling tube, and a second sampling tube. On both ends of the housing, an intake and an outtake are disposed opposite to each other. The filter is disposed in the housing, and has an intake surface and an outtake surface opposite to each other. The filter divides the inner space of the housing into a first sampling zone and a second sampling zone. A first end of the first sampling tube is fixed on the housing, and communicates with the first sampling zone. Likewise, a first end of the second sampling tube is fixed on the housing, and communicates with the second sampling zone. Besides, a second end of the first sampling tube and a second end of the second sampling tube are both fixed on the wall. Thereby, the inspection convenience for the inspection staffs can be enhanced.

Abstract: An object of the present invention is to detect any breakdown or failure of a particulate filter more appropriately. A failure detecting apparatus for detecting failure of a particulate filter according to the present invention comprises an acquiring section which acquires an amount of PM contained in an exhaust gas allowed to outflow from the particulate filter; a regeneration process executing section which executes a filter regeneration process for oxidizing and removing PM deposited in the particulate filter; and a failure judging section which judges that the particulate filter is in the failure state if a decreased amount of the amount of PM contained in the exhaust gas acquired by the acquiring section, during a predetermined period of time as started from a point in time at which the execution of the filter regeneration process performed by the regeneration process executing section is completed, is not equal to or larger than a predetermined reference amount.

Abstract: A differential absorption spectrum for a reactive gas in a gas mixture can be generated for sample absorption data by subtracting background absorption data set from the sample absorption data. The background absorption data can be characteristic of absorption characteristics of the background composition in a laser light scan range that includes a target wavelength. The differential absorption spectrum can be converted to a measured concentration of the reactive gas using calibration data. A determination can be made whether the background composition has substantially changed relative to the background absorption data, and new background absorption data can be used if the background composition has substantially changed. Related systems, apparatus, methods, and/or articles are also described.

Abstract: A system of sampling a fluid comprises a fluid separator having a central axis. The fluid separator includes an insulating sleeve. In addition the fluid separator includes a separator assembly coaxially disposed within the sleeve. Further, the fluid separator includes an annulus radially disposed between the sleeve and the separator assembly. The separator assembly includes a conduit, a support rod coaxially disposed within the conduit, and a plurality of separator members coupled to the support rod within the conduit.

Abstract: An aerosol sampling intake configured to exclude particles generally greater than 20 microns AD and capture particles of less than about 10 microns AD with high efficiency, independent of weather conditions, through which air is sampled by suction. The intake combines an omnidirectional horizontal segment with diffuser and elbow, the elbow transitioning flow to a vertical segment, the vertical segment with overhanging lip, the centrifugal impactor for self-cleaning operation, thus relieving the dual problems of re-entrainment of particles bouncing from the impactor surface and fouling by particles sticking to the impactor surface. The device is adapted for use on moving vehicles, for sampling at increased windspeeds, or for sampling in rain.

Abstract: Technology is presented for the high efficiency concentration of fine and ultrafine airborne particles into a small fraction of the sampled airflow by condensational enlargement, aerodynamic focusing and flow separation. A nozzle concentrator structure including an acceleration nozzle with a flow extraction structure may be coupled to a containment vessel. The containment vessel may include a water condensation growth tube to facilitate the concentration of ultrafine particles. The containment vessel may further include a separate carrier flow introduced at the center of the sampled flow, upstream of the acceleration nozzle of the nozzle concentrator to facilitate the separation of particle and vapor constituents.

Abstract: An inline water trap including a filter component and a panel connector configured to interface with a patient gas monitor. In one embodiment the inline water trap indicates to the patient gas monitor that it is in place and that the patient gas monitor may begin intaking and analyzing the filtered patient sample. The inline water trap receives a patient sample and filters water and contaminants from the sample before allowing the remaining gas portion of the sample to pass through to the patient gas monitor, thereby protecting the patient gas monitor from damage. One embodiment of the inline water trap additionally contains an RFID tag to indicate to the patient gas monitor that the correct type of inline water trap is engaged.

Abstract: Certain aspects and examples are directed to sorbent devices and methods of using them. In certain embodiments, a sorbent device comprising a body comprising a sampling inlet, a sampling outlet and a cavity between the inlet and the outlet, the cavity comprising a serial arrangement of at least four different sorbent materials is described. In some embodiments, the sorbent materials are arranged from a material with a weakest sorbent strength to a material with a strongest sorbent strength with the weakest sorbent strength material adjacent to the sampling inlet.

Abstract: A device includes a cartridge containing a filter material. An insert extends through at least a portion of the filter material. The insert has gas sample path with an opening to provide a sample of air that is representative of the saturation of the filter material. A return path may be included in the insert to return sampled gas to the filter material. A gas mask contains a gas sensor and coupled to the cartridge, which may be replaced when saturated.

Abstract: An apparatus for collecting contaminated air, including: an air pollution detecting unit for monitoring pollution status of air existing in the pertinent area; an air collecting unit for collecting and storing part of the air; and a control unit for comparing data about the pollution status monitored by the detecting unit with preset critical values and commanding the collecting unit to collect a part of the air when data about the pollution status is equal to or greater than the critical values. Since contaminated air is collected by monitoring the pollution status of contaminated air existing in the atmosphere of a pertinent area or the gaseous contaminant-containing air discharged from sources in real time, it is possible to collect air pollution evidence. The collecting unit provided at the outlet of a source, allows air pollution data to be stored after analyzing collected air, making it possible to lawfully sanction air polluter.

Abstract: A method for purifying polluted air having particle phase pollutants and gaseous phase pollutants is provided. The method comprising: separately purifying and treating particle phase and gaseous phase pollutants present in the air; providing a dust cleaning apparatus, a catalytic filter core and a valve for controlling an airflow path within an air purification apparatus; controlling the airflow path for the air to bypass the catalytic filter core in a way that: if the amount of particle phase pollutants is above a predetermined value, the valve is moved to the open position to enable the air to bypass the catalyst filtering core; if the amount of particle phase pollutants is less than a predetermined value, the valve is moved to the closed position to force the air to pass through the catalyst filtering core.

Abstract: A wet cyclone particle collector is disclosed. The wet cyclone particle collector includes a cyclone unit, a liquid delivery unit and a sample collection unit. The cyclone unit draws a gas sample into a cyclone chamber and creates a circular flow of the gas sample inside the cyclone chamber so that particles in the gas sample are separated from said gas sample by centrifugation force. The liquid delivery unit delivers a collection liquid into the cyclone in a non-continuous fashion. The sample collection unit harvests the collection liquid from the cyclone unit. The non-continuous delivery of the collection liquid significantly reduces consumption of collection liquid during operation of the particle collector.

Abstract: A device and process for separating liquid and gas phases in a flowstream containing a liquefied gas or supercritical fluid under pressure mixed with a liquid. A splitter vessel separates the liquid from gas phases and transfers liquid to a collection container while conducting the gas phase out of the splitter. Separation of liquid phase out of the flowstream is provided without additional pressure schemes or solvent extractions imposed on the stream.

Abstract: A filter assembly for use in sidestream gas sampling assembly. The filter assembly of the present invention includes a hydrophilic. The filter further includes a Hydrophobic member positioned downstream of the hydrophilic liner. The hydrophobic disk acts as a second line of defense against moisture reaching the sensing mechanism member that is constructed from a porous material and is situated such that gas entering the filter assembly passes through at least a portion the hydrophilic member. In a further embodiment, the filter includes a hydrophobic member positioned downstream of the hydrophilic member. The hydrophobic member acts as a second line of defense against moisture reaching the sensing mechanism in the gas sampling assembly.

Abstract: Concentrating particles in a turbulent gas flow may include receiving, in a receptacle, a turbulent gas flow that includes particles. The concentration of particles in a gas flow exiting the receptacle at a first port is increased as compared with a concentration of the particles in the gas flow received by the receptacle. The increased concentration of particles is accomplished by removing a portion of the gas flow by using a second port, and fluidly communicating the gas flow through a tube in the receptacle. The tube has a smaller diameter at the end of the tube at which the gas flow exits the tube than diameter at the end of the tube at which the gas flow is received.

Abstract: A gas mixing apparatus including a chamber, a filter, a gas transmitting unit and a porous layer is provided. The chamber includes a gas inlet and a gas outlet. The filter, which has at least one opening, is disposed at the gas outlet of the chamber. An environmental gas outside the chamber is filtered and becomes a clean gas after flowing through the filter into the chamber. The gas transmitting unit is connected to the opening of the filter to transmit a gas to be mixed into the chamber through the opening. The porous layer is disposed at the gas outlet. The gas to be mixed is mixed with the clean gas and leaves the chamber through the porous layer.

Abstract: A method for purifying polluted air having particle phase pollutants and gaseous phase pollutants is provided. The method comprising: separately purifying and treating particle phase and gaseous phase pollutants present in the air; providing a dust cleaning apparatus, a catalytic filter core and a valve for controlling an airflow path within an air purification apparatus; controlling the airflow path for the air to bypass the catalytic filter core in a way that: if the amount of particle phase pollutants is above a predetermined value, the valve is moved to the open position to enable the air to bypass the catalyst filtering core; if the amount of particle phase pollutants is less than a predetermined value, the valve is moved to the closed position to force the air to pass through the catalyst filtering core.

Abstract: A system of sampling a fluid comprises a fluid separator having a central axis. The fluid separator includes an insulating sleeve. In addition the fluid separator includes a separator assembly coaxially disposed within the sleeve. Further, the fluid separator includes an annulus radially disposed between the sleeve and the separator assembly. The separator assembly includes a conduit, a support rod coaxially disposed within the conduit, and a plurality of separator members coupled to the support rod within the conduit.

Abstract: In an embodiment, a wetted wall cyclone comprises a cyclone body including an inlet end, an outlet end, an inner flow passage, and an inner surface defining an inner diameter. In addition, the wetted wall cyclone comprises a cyclone inlet tangentially coupled to the cyclone body. The cyclone inlet includes an inlet flow passage in fluid communication with the inner flow passage. Further, the wetted wall cyclone comprises a skimmer extending coaxially through the outlet end of the cyclone body. The skimmer comprises an upstream end disposed within the cyclone body, a downstream end distal the cyclone body, and an inner exhaust passage in fluid communication with the inner flow passage. Still further, the wetted wall cyclone comprises a first annulus positioned radially between the upstream end and the cyclone body having a radial width W1 between 3% and 15% of the inner diameter of the cyclone body.

Abstract: Disclosed is a filter cassette magazine and an apparatus for sequentially gathering fine particles using the same, in which a ‘filter cassette not having gathered fine particles yet,’ is received from a first magazine and the received filter cassette is transferred to a lower portion of an upper filter holder, the ‘filter cassette not having gather fine particles yet’ is pushed up toward the upper filter holder by lifting a lower filter holder so as to gather fine particles from outside, the ‘filter cassette having gathered fine particles’ is transferred to a lower portion of a second magazine, and the ‘filter cassette having gathered fine particles’ is pushed up and stored into the second magazine by lifting a push rod. Therefore, it is possible to implement simple maintenance and management, reduction in malfunction, and reduction in parts for machines and equipment.

Abstract: A respirator leak detection system and method for increasing the sensitivity and accuracy of leak detection through the fit seal of a respirator. A charged particle separator is used to separate charged particles that pass therethrough and to draw charged particles away from an aerosol flow into a clean gas flow. The separator may also be configured as an aerosol concentrator that takes in a major aerosol flow and outputs a minor flow of higher particle concentration. Neutral particles having no charge, which may have passed through the filtering medium respirator and which are not indicative of fit seal leaks are not entrained in the output flow for subsequent detection, thus increasing the accuracy of the filter leak detection system.

Abstract: A differential absorption spectrum for a reactive gas in a gas mixture can be generated for sample absorption data by subtracting background absorption data set from the sample absorption data. The background absorption data can be characteristic of absorption characteristics of the background composition in a laser light scan range that includes a target wavelength. The differential absorption spectrum can be converted to a measured concentration of the reactive gas using calibration data. A determination can be made whether the background composition has substantially changed relative to the background absorption data, and new background absorption data can be used if the background composition has substantially changed. Related systems, apparatus, methods, and/or articles are also described.

Abstract: A filter arrangement for removing impurities from a fluid is disclosed, the filter arrangement (10) includes a plurality of screen portions (18, 20) through which the fluid passes. The screen portions include a first screen portion (18) and a second screen portion (20) separated by a predetermined distance. The predetermined distance can be determined on the basis of a threshold particle length. In one form the filter arrangement (10) is mounted in a housing (16) which is configured to receive two filter elements (18, 20) arranged in a nested configuration. A particle detector using the filter is described.

Abstract: A system and associated method for improved mercury removal from a flow containing combustion exhaust. The system includes a filtration arrangement through which the flow proceeds to remove material, including mercury, from the flow. The system includes a sensor arrangement sensing a mercury concentration within the flow downstream of the filtration arrangement and providing a signal indicative of the sensed mercury concentration. The system includes an adjustable temperature control arrangement changing a temperature of the combustion exhaust proceeding to the filtration arrangement in response to the signal indicative of the sensed mercury concentration to change an amount of mercury being removed from the flow.

Abstract: Concentrating particles in a turbulent gas flow may include receiving, in a receptacle, a turbulent gas flow that includes particles. The concentration of particles in a gas flow exiting the receptacle at a first port is increased as compared with a concentration of the particles in the gas flow received by the receptacle. The increased concentration of particles is accomplished by removing a portion of the gas flow by using a second port, and fluidly communicating the gas flow through a tube in the receptacle. The tube has a smaller diameter at the end of the tube at which the gas flow exits the tube than diameter at the end of the tube at which the gas flow is received.

Abstract: The present invention relates to an air filtering system capable of enhancing inspection convenience, which is disposed in the ceiling and comprises a housing, a filter, a first sampling tube, and a second sampling tube. On both ends of the housing, an intake and an outtake are disposed opposite to each other. The filter is disposed in the housing, and has an intake surface and an outtake surface opposite to each other. The filter divides the inner space of the housing into a first sampling zone and a second sampling zone. A first end of the first sampling tube is fixed on the housing, and communicates with the first sampling zone. Likewise, a first end of the second sampling tube is fixed on the housing, and communicates with the second sampling zone. Besides, a second end of the first sampling tube and a second end of the second sampling tube are both fixed on the wall. Thereby, the inspection convenience for the inspection staffs can be enhanced.

Abstract: Embodiments of the invention generally provide an apparatus and method for certifying a filter in a containment system without decontaminating the containment system prior to certification. The apparatus generally comprises a valve assembly selectable between at least three operational states. A first state prevents flow from prevents flow through a port of a housing. A second state fluidly couples the port to test equipment necessary to test a filter disposed within the housing. A third state seals the port but fluidly couples the test equipment to a decontamination system.

Abstract: In one form the present invention provides an apparatus in an airflow path before a particle detector, wherein the apparatus removes a substantially constant proportion of all sizes of airborne particles from the airflow over time. In an example the apparatus includes a flow splitting arrangement configured to divide a fluid flow into a plurality of sub-flows, the splitting arrangement 10 including means for defining a plurality of substantially identically dimensioned flow apertures configured to direct a portion of the fluid into a respective sub-flow.

Abstract: The present technology provides an air pre-treatment and monitoring device that includes an inlet port configured to receive an air flow and an outlet port configured to expel the air flow. The illustrative air pre-treatment device further includes a multiple-stage filter arranged between the inlet and outlet ports and that is configured to filter particles from the air flow.

Abstract: Embodiments of the invention generally provide an apparatus and method for certifying a filter in a containment system without decontaminating the containment system prior to certification. The apparatus generally comprises a valve assembly selectable between at least three operational states. A first state prevents flow from prevents flow through a port of a housing. A second state fluidly couples the port to test equipment necessary to test a filter disposed within the housing. A third state seals the port but fluidly couples the test equipment to a decontamination system.

Abstract: A wetted wall cyclone system for sampling an aerosol. In an embodiment, the system comprises a cyclone body including an inlet end, an outlet end, and an inner flow passage extending therebetween. In addition, the system comprises a cyclone inlet tangentially coupled to the cyclone body proximal the inlet end. The cyclone inlet includes an inlet flow channel in fluid communication with the inner flow passage of the cyclone body. Further, the system comprises a skimmer coaxially coupled to the outlet end of the cyclone body. The skimmer comprises a separation end extending into the outlet end of the cyclone body, a free end distal the outlet end of the cyclone body, and an inner exhaust channel in fluid communication with the inner flow passage of the cyclone body. Still further, the system comprises means for reducing the temperature of at least a portion of the cyclone body.

Abstract: An apparatus (10) for purifying polluted air consisting of particle phase pollutants and gaseous phase pollutants, the apparatus (10) comprising: a dust level sensor (23) to measure the amount of particle phase pollutants in the polluted air; a dust removal component (14) to remove the particle phase pollutants from the polluted air; a catalyst filtering core (17) to decompose the gaseous phase pollutants by chemical reaction; a valve (22) for selectively controlling a path of air flow within the apparatus (10) and is movable between an open position and closed position, the valve (22) being positioned downstream from the dust removal component (14); wherein if the amount of particle phase pollutants measured by the dust level sensor (23) is above a predetermined value, the valve (22) is moved to the open position to enable the air to bypass the catalyst filtering core (17); and if the amount of particle phase pollutants measured by the dust level sensor (23) is less than a predetermined value, the valve (22)

Abstract: An aerosol sampling intake configured to exclude particles generally greater than 20 microns AD and capture particles of less than about 10 microns AD with high efficiency, independent of weather conditions, through which air is sampled by suction. The intake combines an omnidirectional horizontal segment with diffuser and elbow, the elbow transitioning flow to a vertical segment, the vertical segment with overhanging lip, the centrifugal impactor for self-cleaning operation, thus relieving the dual problems of re-entrainment of particles bouncing from the impactor surface and fouling by particles sticking to the impactor surface. The device is adapted for use on moving vehicles, for sampling at increased windspeeds, or for sampling in rain.

Abstract: An adjustable type guide vortex gas-liquid separating apparatus is provided, it comprises a case, a vortex flow guide spiral pipe, a mist eliminator, an adjusting valve and a ? ray phase volume fraction meter. Its separating method is to make the oil-gas-water multiphase flow move in vortex, and thus to realize the gas-liquid separation, then to measure the gas content of the separated liquid phase by using the ? ray phase volume fraction meter and to send out control information as judged by the magnitude of the gas content in the liquid phase, so as to control the opening of the adjusting valve of the gas circuit, thus to achieve adjustment of the gas-liquid separation effects, and to control the gas content of the liquid phase to a certain range.

Abstract: Embodiments of the invention generally provide an apparatus and method for certifying a filter in a containment system without decontaminating the containment system prior to certification. The apparatus generally comprises a valve assembly selectable between at least three operational states. A first state prevents flow from prevents flow through a port of a housing. A second state fluidly couples the port to test equipment necessary to test a filter disposed within the housing. A third state seals the port but fluidly couples the test equipment to a decontamination system.

Abstract: A reel-to-reel aerosol collection and storage system for capturing and storing a plurality of separate samples of aerosol particles using electrostatic precipitation technology for collecting such particles onto a tape mechanism for analysis at a future time. The particles are collected onto a region of the collection tape for a defined period of time and then that portion of the collection tape is advanced out of the collection zone and manipulated so as to form sealed pouches or pockets which can be either severed from the collection tape for individual storage in a temperature controlled storage container, or which can be stored on a take-up reel in a temperature controlled environment. The collected aerosol particles are stored with a buffer fluid to preserve and maintain the viability of the collected particles for future extraction and analysis. Several embodiments for forming sealed pouches or pockets and methods of storing the collected particles are disclosed.

Abstract: A filter includes at least two different adsorptive media. First, chemisorptive media, which is porous and includes an acidic functional group, is used to remove molecular bases, including ammonia, organic amines, imides and aminoalchols, from the atmosphere used in semiconductor fabrication and other processes that require uncontaminated gaseous environments of high quality. Second, physisorptive media is able to adsorb condensable contaminants, particularly those having a boiling point greater than 150 degrees C. The physisorptive media can include untreated, activated carbon.