Abstract: The invention features compact systems and methods for vacuum liquid purification and extraction of a liquid sample.

Abstract: The invention features compact systems and methods for vacuum liquid purification and extraction of a liquid sample.

Abstract: A system for facilitating communication of information between an information source positioned inside a refrigerated environment and a position outside the refrigerated environment comprising a transmitter for transmitting a signal including the information, a planar antenna fixed to a gasket for resonating the transmitted signal, the gasket providing a seal between the refrigerated compartment and a door providing access to the refrigerated compartment, and a receiver for receiving the signal including the information. The information could include information concerning at least one container positioned in a refrigerated environment. The system may utilize a Wi-Fi device, a Bluetooth® device, RFID device, or other devices for transmitting the information.

Abstract: A non-invasive level sensing system for monitoring the amount of content in at least one container includes a platform for supporting the at least one container, at least one holder associated with the at least one container supported by the platform, a source for generating a radio frequency signal, circuitry in communication with the at least one holder for transmitting the radio frequency signal through the at least one holder into the at least one container and receiving a portion of the radio frequency signal reflected at a content-air interface in the at least one container, and circuitry for processing the reflected radio frequency signal and determining the amount of content in the at least one container.

Abstract: A system for facilitating communication of information between an information source positioned inside a refrigerated environment and a position outside the refrigerated environment comprising a transmitter for transmitting a signal including the information, a planar antenna fixed to a gasket for resonating the transmitted signal, the gasket providing a seal between the refrigerated compartment and a door providing access to the refrigerated compartment, and a receiver for receiving the signal including the information. The information could include information concerning at least one container positioned in a refrigerated environment. The system may utilize a Wi-Fi device, a Bluetooth® device, RFID device, or other devices for transmitting the information.

Abstract: A non-invasive liquid level sensing system for monitoring the amount of liquid in at least one container includes a platform for supporting the at least one container, at least one holder associated with the at least one container supported by the platform, a source for generating a radio frequency signal, circuitry in communication with the at least one holder for transmitting the radio frequency signal through the at least one holder into the at least one container and receiving a portion of the radio frequency signal reflected at a liquid-air interface in the at least one container, and circuitry for processing the reflected radio frequency signal and determining the amount of liquid in the at least one container.

Abstract: A system for pressurized liquid extraction of solid samples including quick-connect, threadless columns for holding the solid sample is disclosed. A pressurized liquid extraction (PLE) module continuously performs extraction on the solid sample to yield liquid sample. The quick-connect columns include a threadless, cylindrical tube and end cap assemblies, which are structured and arranged to provide a tight interference fit with the inner surface of the annulus of the column portion and with top and bottom cup rings.

Abstract: A system for pressurized liquid extraction and purification of solid samples includes a pressurized liquid extraction (PLE) module including a PLE cell, a heating element, a high-pressure source of an extraction solvent, a pressure regulator, and a cooling coil. The PLE module continuously performs high-pressure, high-temperature extraction on the solid sample to yield liquid sample. The liquid sample is concurrently provided to a purification module including one or more columns. The purification module yields a purified liquid sub-sample containing substantially all of a specific trace substance present in the solid sample. The sub-samples are transferred to a concentrator assembly through a collector inlet. The concentrated sub-sample can be used in subsequent analysis to determine the concentration of the trace substance in the original solid sample.

Abstract: A system for pressurized liquid extraction and purification of solid samples includes a pressurized liquid extraction (PLE) module including a PLE cell, a heating element, a high-pressure source of an extraction solvent, a pressure regulator, and a cooling coil. The PLE module continuously performs high-pressure, high-temperature extraction on the solid sample to yield liquid sample. The liquid sample is concurrently provided to a purification module including one or more columns. The purification module yields a purified liquid sub-sample containing substantially all of a specific trace substance present in the solid sample. The sub-samples are transferred to a concentrator assembly through a collector inlet. The concentrated sub-sample can be used in subsequent analysis to determine the concentration of the trace substance in the original solid sample.

Abstract: A valve assembly has a unitary teflon valve housing with six peripheral facets. A recessed area on the surface of each facet forms a valve seat. Pairs of fluid channels formed in the housing each terminate at openings at a central, planar area of a corresponding valve seat. A pair of rigid tubes are disposed in the openings at each valve seat, each tube forming a fluid-tight seal with periphery of the corresponding opening. The tubes extend slightly beyond the surface of the housing by a predetermined clearance. A diaphragm made of a resilient material covers the valve seat. The periphery of the diaphragm is in fluid-tight sealing engagement with the periphery of the valve seat. A central portion of the diaphragm is coupled to a solenoid above the diaphragm. The solenoid moves the diaphragm central portion between a closed position toward the valve seat and an open position away from the valve seat.