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7536898 |
Quantitative aerosol dilution system
An inlet conduit ( 32 ) connects to aerosol source ( 100 ) of an initial particle concentration. A first flow path having particle counter ( 62 ) connects to inlet conduit ( 32 ). A second flow...
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7531363 |
Particle detection using fluorescence
Detection systems and methods for capturing and analyzing particles within a particle sample are provided. The detection system may include, for example, a particle concentrator that can be used to...
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7521673 |
Wide range, very high resolution differential mobility analyzer (DMA)
The resolution of a differential mobility analyzer (DMA) and the range of valid mobility values for the charged particles that it can detect are increased. The DMA makes use of a flat configuration...
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7454988 |
Method for fluid sampling using electrically controlled droplets
The present disclosure relates to a method for sampling a fluid, such as air. As fluid flows through a device, a scrubbing liquid is positioned in a pattern to contact the fluid and constituents in...
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7437908 |
Particle counter
A particle counter has a saturator inhaling air in an atmosphere and vaporizing a working liquid therein; and an electrical detection unit electrically shielding an internal space thereof to...
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7430893 |
Systems and methods for detecting contaminants
The present invention relates to a system and method for sampling a gas flow to measure one or more contaminants within a semiconductor processing tool. The system includes a portable unit...
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7428848 |
Electrostatic sampler and method
The present invention is an electrostatic collector for low cost, high throughput, high efficiency sampling and concentration of bioaerosols. The device is small enough to be portable and can be...
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7383719 |
Automated passenger screening system
A screening system for screening passengers is disclosed. The system includes a floor grating having underlying rotating brushes that are installed in access ways at public venues (e.g., doors,...
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7334453 |
Modular particulate sampler
A gas sampler includes an impact disc for removing larger particles from a gas flow drawn by a pump and a filter for capturing smaller particles, also positioned in the flow path. The sampler is...
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7299710 |
Hand-held trace vapor/particle sampling system
A sampling system that contains filter components for collecting and concentrating vapor and particles in high-volume flows. The sample is then vaporized and delivered to a detector at a low-volume...
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7298486 |
Aerosol mobility size spectrometer
A device for measuring aerosol size distribution within a sample containing aerosol particles. The device generally includes a spectrometer housing defining an interior chamber and a camera for...
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7261007 |
Circumferential slot virtual impactor for concentrating aerosols
A circumferential slot virtual impactor includes a disk-shaped housing with an endless circumferential slot for receiving aerosols. The slot forms an acceleration nozzle, and a receiver nozzle...
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7251982 |
Apparatus for analysis of aerosols
There is provided apparatus for the measurement of particle mass concentration of an aerosol and which comprises at least one aerosol inlet and at least one electrostatic precipitator which directs...
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7243560 |
Method and apparatus for airborne particle collection
Embodiments of an apparatus for collecting biological aerosols from an air sample include a hollow tube adapted for pumping a liquid through an interior volume to an outer surface and a collection...
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7178380 |
Virtual impactor device with reduced fouling
A virtual impactor device having reduced fouling includes injection ports within the separation zone to redirect particles that otherwise tend to impact the walls of the separation zone and produce...
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7159446 |
Particulate matter concentration measuring apparatus
A highly sensitive particulate matter concentration measuring apparatus for measuring a concentration of particulate matter in a sample gas collected in a collecting region formed on a collecting...
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7161143 |
Method and apparatus to increase the resolution and widen the range of differential mobility analyzers (DMAs)
A differential mobility analyzer (DMA) for separating charged particles or ions suspended in a gas and a method of using the DMA for separating such particles. The invention includes various means...
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7113277 |
System and method of aerosolized agent capture and detection
System and method of aerosolized agent detection. Multi-part collection tape is employed for capturing particles of interest for immediate analysis and optional forensic preservation and recording...
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7063731 |
Method and apparatus for detecting particles in a gas flow
The application discloses several methods of detecting particles moving in a gas flow, a detection means ( 70 ), a method of improving the linearity of the signal produced by a triboelectric...
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7029921 |
Apparatus for rapid measurement of aerosol bulk chemical composition
An apparatus for continuous on-line measurement of chemical composition of aerosol particles with a fast time resolution is provided. The apparatus includes an enhanced particle size magnifier for...
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6978657 |
Portable chemical detection system with intergrated preconcentrator
A portable system for the detection of chemical particles such as explosive residue utilizes a metal fiber substrate that may either be swiped over a subject or placed in a holder in a collection...
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6972408 |
Ultra high mass range mass spectrometer systems
Applicant's present invention comprises mass spectrometer systems that operate in a mass range from 1 to 10 16 DA. The mass spectrometer system comprising an inlet system comprising an aerodynamic...
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6965240 |
Apparatus and methods for analyzing particles using light-scattering sensors and ionization sensors
Apparatus and methods are disclosed for analyzing particles, such as coarse particulates, fine particulates (e.g., diesel particulate matter), and combustion aerosols, using light-scattering...
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6904787 |
Method for measuring suspended particulate matter in atmospheric air
Particulate collector is carried onto airplane and collects suspended particulate matter in the atmospheric air in such a manner that suspended particulate matter is electrically charged by...
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6898960 |
Indoor air quality test apparatus
A method that allows an individual to personally test for contaminants in an air supply. The method consists of purchasing the test kit, mounting the test kit to an existing particulate filter,...
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6829919 |
High-quality continuous particulate matter monitor
A system for monitoring an aerosol including a plurality of particles is provided. Each of the particles has a size. The system includes an impactor assembly to receive the aerosol at a first flow...
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6809314 |
Fine particle classification apparatus and method for classifying aerosol particles in a sheath gas
A fine-particle classification apparatus includes an aerosol generation section which generates an aerosol containing fine particles in a medium background gas, a fine-particle classification...
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6796164 |
Integrated fluidics system for simplified analysis of aerosolized biological particles and particle detection ticket thereof
An integrated fluidics system for simplified analysis of aerosolize biological particles has a unitary self-contained ticket provided with a sample fluid reservoir, an array of particle-detection...
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6796165 |
Apparatus and method for real-time measurement of mass, size and number of solid particles of particulate matter in engine exhaust
An apparatus for real-time measurement of mass, size and number of solid particles of particulate matter in engine exhaust has a catalytic stripper to remove at least about 90% of a volatile...
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6779380 |
Measuring system for the control of residual dust in safety vacuum cleaners
A safety vacuum cleaner including a measuring system for residual dust monitoring, including a housing having an air passage with an inlet, an outlet, and a flow cross section. A turbine is...
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6742383 |
Diluter to reduce quantity of micro particles in the air so as to facilitate calculation of concentration of the micro particles in the air
A diluter includes a filtering assembly and an intake assembly. The filtering assembly has a top cap that is provided with a first connector and a first through hole defined through the top cap, a...
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6733576 |
Gas sampling separator
A gas sampling separator 29 for the separation of liquid or other contaminants from gas received from a pipeline may be easily inspected visually and cleaned. A cylindrical body 62 forming a...
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6712881 |
Continuous, laminar flow water-based particle condensation device and method
An apparatus and method for producing a diffusive, continuous laminar flow for particle growth via condensation of vapors with a mass diffusivity near or higher than the thermal diffusivity of the...
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6672135 |
Filter for gas analysis
A filter ( 20 ) suitable for gas analysis, especially non-gravimetric gas analysis, by collecting particulate matter thereon, with a filter material comprising a polycarbonate membrane having a...
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6567157 |
Fast mixing condensation nucleus counter
A fast mixing condensation nucleus counter useful for detecting particles entrained in a sample gas stream is provided. The fast mixing condensation nucleus counter comprises a detector and a...
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6530287 |
Alpha-environmental continuous air monitor inlet
A wind deceleration and protective shroud that provides representative samples of ambient aerosols to an environmental continuous air monitor (ECAM) has a cylindrical enclosure mounted to an input...
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6520034 |
High air volume to low liquid volume aerosol collector
A high air volume to low liquid volume aerosol collector. A high volume flow of aerosol particles is drawn into an annular, centripetal slot in a collector which directs the aerosol flow into a...
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6516654 |
Apparatus and method for analyzing particulate matter in gas and apparatus and method for carbon differentiating
The present invention provides a method for analyzing particulate matter in a gas for analyzing simply and with high precision the particulate matter in an engine emission and an apparatus therefor...
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6502450 |
Single detector differential particulate mass monitor with intrinsic correction for volatilization losses
The mass of particulate matter in a particle laden gas stream is measured using a single mass detector. The particle laden gas stream and a substantially identical but particle-free gas stream...
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6485686 |
Method and apparatus for counting submicron sized particles
A system for detecting the presence of different size groups of submicron size particles in a fluid sample collected from the environment includes apparatus for collecting the environment. The...
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6324895 |
Process for determining the amount of erosive material entering a power recovery turbine
A method for continuous monitoring the presence of entrained catalyst in a regenerator flue gas stream of a fluidized catalytic cracking unit is provided. The method has the following steps: (a)...
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6082179 |
Particle measuring device having funnel-shaped collector for semiconductor clean room applications
A particle measurer used in a semiconductor clean room includes a funnel-shaped collector for facilitating the measurement of a particle level of an air sample in the clean room. The particle...
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6051189 |
System and method for detection, identification and monitoring of submicron-sized particles
A system and method for detection, identification, and monitoring of submicron sized particles, the method including the steps of collecting a sample, extracting existing submicron particles from...
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6012325 |
Method and apparatus for measuring metallic impurities contained within a fluid
A method and apparatus for measuring metallic impurities within a fluid by X-ray fluorescence in which a sample stream flowing at a constant flow rate is passed through a microporous filter. The...
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5932818 |
Near real time vapor detection and enhancement using aerosol adsorption
A vapor sample detection method where the vapor sample contains vapor and ambient air and surrounding natural background particles. The vapor sample detection method includes the steps of...
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5892141 |
Method and apparatus for analysis of particulate content of gases
A method and apparatus for analysis of particulate content of gases, applicable to the quantitative and qualitative analysis of vehicle engine emissions, includes sampling, removing particles and...
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5834628 |
Activity weighted particle size distribution system
A system for measuring the size distribution of particles on which radioactive atoms are attached including: an air flow channel for receiving an influx of the radioactive atoms, a fan for...
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5606112 |
Radial differential mobility analyzer
The present invention provides a differential mobility analyzer for the classification of aerosols, comprising a chamber having two generally parallel faces and means to confine gases in the...
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5578746 |
Apparatus for chemical vapor deposition and method of use
Fluctuations may occur in the vapor flux of a chemical being delivered in an otherwise inert gas stream from various causes. For example, the decrease in vapor flux over time may occur due to...
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5571945 |
Method and apparatus to measure particulate matter in gas
Apparatus for measuring the amount of particulate matter in a gas having a gas supply, a first particulate matter collector downstream of the gas supply and in gaseous communication with the gas...
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