Abstract: An analytical system and method for detecting volatile organic chemicals in water including a coated SAW detector that provides for improved reduction of moisture at the coating of the SAW detector. A stabilized SAW sensitivity and long lasting calibration is achieved. The analytical system further includes an improved sample vessel and sparger that allow for easy grab sample analysis, while also providing efficient purging of the volatile organic compounds from the water sample. In addition, an improved preconcentrator provides a stabilized sorbent bed.

Abstract: An analytical system and method for detecting volatile organic chemicals in water including a coated SAW detector that provides for improved reduction of moisture at the coating of the SAW detector. A stabilized SAW sensitivity and long lasting calibration is achieved. The analytical system further includes an improved sample vessel and sparger that allow for easy grab sample analysis, while also providing efficient purging of the volatile organic compounds from the water sample. In addition, an improved preconcentrator provides a stabilized sorbent bed.

Abstract: An analytical system and method for detecting volatile organic chemicals in water including a coated SAW detector that provides for improved reduction of moisture at the coating of the SAW detector. A stabilized SAW sensitivity and long lasting calibration is achieved. The analytical system further includes an improved sample vessel and sparger that allow for easy grab sample analysis, while also providing efficient purging of the volatile organic compounds from the water sample. In addition, an improved preconcentrator provides a stabilized sorbent bed.

Abstract: An analytical system and method for detecting volatile organic chemicals in water including a coated SAW detector that provides for improved reduction of moisture at the coating of the SAW detector. A stabilized SAW sensitivity and long lasting calibration is achieved. The analytical system further includes an improved sample vessel and sparger that allow for easy grab sample analysis, while also providing efficient purging of the volatile organic compounds from the water sample. In addition, an improved preconcentrator provides a stabilized sorbent bed.

Abstract: Modular fluidic mixing system for delivering a fluid mixture from separate sources to a point of use. The system includes a mounting board and a series of rows of substrate fittings mounted on the board. Each row has a first end fitting connected to one of the fluid sources and a second end fitting. Each of the fittings in a row is connected in fluid communication to an adjacent one of the fittings in the row to define a fluid flow path from the one of the fluid sources to the second end fitting. Each second end fitting in each row is connected in fluid communication to an adjacent second end fitting in an adjacent row to define a mixing header. The fluids are mixed within the header and exit as a mixture. Fluid flow components for controlling flow from the fluid sources are mounted to the fittings.

Abstract: A portable analytical system for detecting organic chemicals in water comprising a miniature preconcentrator and a SAW detector, the latter being characterized by a nanoporous carbon coating that provides improved response compared to prior art polymer coatings, particularly when detecting low concentrations of trihalomethane chemicals, such as chloroform and bromoform.

Abstract: A pneumatic control valve assembly for a sample conditioning system used to condition one or more fluid streams to be analyzed. A pneumatic valve control assembly comprises a housing being attachable to an enclosure of the sample conditioning system at a first interface. The assembly includes at least one electrically operated pneumatic solenoid valve located in the housing and adapted to controllably supply pressurized air through a flow passage extending through the first interface to a respective pneumatically controlled valve located in the conditioning system enclosure to operate the pneumatically controlled valve. The assembly includes electronic circuitry located in the housing and having at least one relatively high voltage control circuit for controlling power supplied to the solenoid valve.

Abstract: A portable analytical system for detecting organic chemicals in water comprising a miniature preconcentrator and a SAW detector, the latter being characterized by a nanoporous carbon coating that provides improved response compared to prior art polymer coatings, particularly when detecting low concentrations of trihalomethane chemicals, such as chloroform and bromoform.