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7634378 |
Detection of insufficient sample during aspiration with a pipette
Analyzing the pressure profile generated during a limited period of time immediately prior to the end of a liquid aspiration process and comparing the standard deviation of the residuals to a...
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7607363 |
Liquid volume metering device and method
The present invention discloses a liquid volumetric device comprising a metering tube, a start sensor, an end sensor, a bath for storage of a sample to be metered, a vacuum chamber and a pump for...
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7485263 |
Microproportioning system
A microproportioning system includes a reservoir, a micro-diaphragm pump the entrance of which is connected to the reservoir, an open-jet proportioner the entrance of which is connected to the exit...
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7448288 |
Scent evidence transfer device
An improved scent transfer device for collecting evidence at a crime scene. The device comprises an air inflator with a gas cartridge coupled to an air amplifier. A holder having a sterile pad...
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7444891 |
In-water hull cleaning sampling method
A method includes providing a sampling device having a sampling chamber therein, a pump operatively coupled to the sampling chamber, and a drive means coupled to the sampling chamber; situating the...
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7437959 |
In-water hull cleaning sampling device
An In-Water Hull Cleaning Sampling Device includes a sampling chamber, a drive shaft housing, a drive shaft sealing membrane, a drive shaft, a spring retainer, a pressure spring, a cleaning pad, a...
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7435339 |
Filter device integrating sampled volume control
The invention relates to a drainage device for a filter unit for microbiological testing of liquids, said drainage device including a mechanical support ( 10 ), which is adapted to receive a filter...
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7430930 |
Sampler for taking a defined amount of sample of a fluid medium from a sample-taking site
A sampler for taking a defined amount of sample of a fluid medium from a sample-taking site, with a tubular line, which can be brought into contact with the fluid medium at the sample-taking site,...
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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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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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7159445 |
Sniffing leak detector and method for operation thereof
A sniffing leak detector includes a handpiece, supporting a sniffing tip, the detector further including a gas sensor. To promote longer life and obtaining more accurate results, the leak detector...
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7159475 |
Apparatus and method of sampling semivolatile compounds
An apparatus and method for sampling semivolatile compounds is disclosed. A collection bag is placed around an air conditioning vent on an aircraft. An opening in the collection bag receives air...
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7100424 |
Apparatus for accessing container security threats and method of use
A system and method for accessing the security threat of a cargo container by sampling the air contained therein. The system is capable of analyzing the air disposed within the container for...
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6993985 |
Method and device for fluid sampling
A fluid stream sampler enables variable flow rate controlled air sampling, as an attachment to a vacuum source, typically a household vacuum cleaner. The fluid stream sampler includes a housing...
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6966236 |
Selective profiling of bulk building material for characterization using a concrete contamination profiling technology
Disclosed is a method and system to characterize the contamination levels of bulk materials, the method comprises drilling into the material, sampling material from the drill point at predetermined...
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6948389 |
Dissolution test sampling
Improved sampler apparatus and methods for dissolution testing include a controller that determines whether several different dissolution testing methods can be performed concurrently by the...
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6938691 |
Portable groundwater sampling system
A portable groundwater sampling system utilizing an air pump in combination with a sampling tank, valves, and a pressure gauge to sample a liquid from a below ground surface monitoring well. The...
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6925895 |
Sample collection system
A system for collecting a representative, non-contaminated sample includes a sample intake positioned in a chosen location within a body of liquid. A first conduit section transfers a sample, which...
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6905657 |
Methods and devices for storing and dispensing liquids
In a liquid handling system including a liquid handling substrate having a plurality of channels for conducting a liquid sample in said substrate, where the channels terminate in a plurality of...
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6851459 |
Air samplers
An air sampler for use in analyzing biological or other analytes, comprizes an airflow chamber having an air inlet and an air outlet. An extract from an air mover draws ambient air in through the...
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6837121 |
Sampling interface for a vehicle
The invention comprises a material sampling interface that includes one or more inlet manifolds and one or more outlet manifolds and piping running to and from the manifolds. There are rungs...
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6825478 |
MALDI plate with removable magnetic insert
A sample plate structure is provided including a retainer plate having a central recess with a trough along its periphery, a sample insert plate which fits into and rests on contact surface of the...
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6817227 |
Aboveground leak detection system for detecting sub-surface fluid leaks from fluid containing vessels
An apparatus and method for sampling sub-surface soil gas samples and detection of distinctive chemical tracer compounds in the soil gas samples employing an aboveground sampling apparatus. The...
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6815670 |
Materials and apparatus for the detection of contraband
A detector requires a stream of dry air for transporting particles to the detector. The detector then operates to determine whether the dry air has transported any particles of interest. Continuous...
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6790674 |
Sampler
To sample hot liquids containing volatile materials, the liquid is cooled in a refrigerator and pumped through a syringe needle into a container until the container overflows. The needle is removed...
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6767734 |
Method and apparatus for producing age-synchronized cells
The present invention relates to a method and an apparatus for producing cell population of the same chronological age. Cells of a predetermined age are collected onto an array of surfaces. The...
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6742404 |
Hybrid passive/automated flow proportional fluid sampler
The invention discloses a flow proportional fluid sampler. A turbine pump unit has a pump that is powered by the fluid flow of the test site, such as a stream, thereby eliminating the need for...
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6713021 |
Dispensing method and assembly for liquid droplets
A dispensing assembly for liquid droplets that includes a dispenser connected to a liquid carrying pipe which in turn is connected to a source of pressurized liquid. The dispenser has an elongated...
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6706538 |
Microvolume liquid dispensing array
Devices and methods for integrated packaging, shipping, storage and precise dispensing of extremely small volumes of liquids such as aqueous solutions and compounds dissolved in organic solvents...
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6669909 |
Liquid droplet dispensing
A dispenser ( 1 ) for liquid droplets of the order of 30 μl or less in volume. The dispenser ( 1 ) comprises a metering valve body ( 2 ) having a main bore ( 3 ) connected by a pipe ( 4 ) to a...
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6666068 |
Vapor trap system and associated method for detecting volatile organic chemical vapors
A vapor trap for detecting VOCs includes a housing, having a first end portion, a second end portion and at least one opening for receiving gas vapor. The housing is at least partially buried in...
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6619103 |
Sample flow path assembly for electronic gas leak detectors
A gas detector having a sample flow path assembly capable of providing a sample air flow rate to a sensing device in excess of about 300 SCCM. The sample flow path assembly also provides the gas...
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6620383 |
Microvolume liquid dispensing device
Devices and methods for integrated packaging, shipping, storage and precise dispensing of extremely small volumes of liquids such as aqueous solutions and compounds dissolved in organic solvents...
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6615679 |
Ensemble manifold, system and method for monitoring particles in clean environments
A system for detecting particles in a clean environment includes and ensemble manifold having a plurality of sample ports, a delivery port, and flow junction having no open-close valves or other...
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6593146 |
Metering device and method for operating a metering device
A dosing device is provided and comprises a withdrawal container and a dosing means comprising at least one dosing unit which is a piston-cylinder unit designed as a disposable member. The...
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6576193 |
Device and method for collecting and testing fluid specimens
Devices and methods for collecting a fluid specimen and testing it are disclosed that avoid unduly exposing the tester to the specimen and eliminate the possibility of contaminating the remaining...
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6502470 |
Fluid sampling system
A fluid sampling system has a drift cell ( 60 ) enclosing a first fluid. An inlet chamber ( 62 ) communicates with the body of first fluid via an orifice ( 74 ). A series of negative pressure...
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6477906 |
Automatic multi-sorbent tube air sampler
A sampling system for capturing samples of trace elements in ambient air comprises a multi-port valve coupled to a plurality of sorbent tubes. Each tube is connected to the multi-port valve by...
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6453759 |
Apparatus for and method of taking a predeterminable volume of a sample of medium
The apparatus makes it possible to change a desired sample volume—even during operation—in a simple manner without mechanical intervention, with any accumulation solids of a sample contained in...
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6422248 |
Device for cleaning pipette needles or stirrers
The invention concerns a device for cleaning pipette needles or stirrers, the device comprising a trough which holds cleaning fluid and whose lower region has a fluid duct for filling and/or...
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6420186 |
Method for depositing a flattened droplet on a surface and apparatus therefor, and a pump therefor
A method and apparatus is provided for depositing a flattened droplet on a surface. The method includes the steps of providing a tube with a distal end that contains a microvolume of liquid,...
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6338282 |
Portable liquid sampling system
The invention provides a liquid sampling device and method using a chamber in which a vacuum is created to draw a liquid sample through a sample intake tube assembly into a sample receptacle placed...
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6306350 |
Water sampling method and apparatus with analyte integration
A method and apparatus of sampling a body of water in which discrete samples are successively withdrawn from a body of water and analyte is extracted from the respective samples while integrating...
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6216548 |
Method for sampling particles present in a processing chamber
An apparatus for sampling particles from a processing chamber used in the fabrication of semiconductor devices includes a sampling line sequentially having a sampling port, a sampling air valve, a...
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6192767 |
Aerobiological sampler for airborne particles
A portable sampler able to collect airborne particles present in the surrounding air with characteristics of sampling air at particular aspiration flow corresponding to a medium value of current...
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6182503 |
On-line rheological measurement for process control
On-line rheological measurements are made on a process flowing material, such as a polymer melt, utilizing a rheometer of the type in which an inlet pump delivers a relatively large volumetric flow...
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6177770 |
Article comprising an incremental positioner
An incremental positioner is disclosed. In one embodiment, the incremental positioner includes a motor, a drive shaft, a motion converter and a rack. The motion converter engages the rack and,...
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6119532 |
Apparatus and method for particle sampling during semiconductor device manufacturing
An apparatus for sampling particles from a processing chamber used in the fabrication of semiconductor devices includes a sampling line sequentially having a sampling port, a sampling air valve, a...
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6119533 |
Sampling system with selectable pumps to communicate with reading station
A blood clot detector includes a pressure transducer on an aspiration line to provide output voltage data to a microprocessor corresponding to the vacuum level during aspiration. The microprocessor...
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6105440 |
Portable air sampling systems including non-intrusive activity monitor and methods of using same
Portable air sampling systems and methods are provided for intermittently sampling air in the breathing zone of a person over extended periods of time. Air sampling system performance can be...
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