Alliant Techsystems Inc.

Vpi Enigineering, Inc.

John Blankevoort

James K Bentley

Collin S Lewis

Ken Wunner

Derek Maxwell

Sheena Alm

Mark Kaspersen

A portable multi-dimensional gas chromatograph, the gas chromatograph including a carrier gas container, a regulator fluidly connected to the carrier gas container, a dopant chamber containing a reference chemical, at least one pre-concentrator which is fluidly connected to the regulator and the dopant chamber, a first separation column fluidly connected to the at least one pre-concentrator, a second separation column fluidly connected to the at least one pre-concentrator, a first detector fluidly connected to the first separation column, and a second detector fluidly connected to the second separation column.

Multi-dimensional portable gas chromatograph system

A Gas regulator capable of reducing the pressure of a gas supply from thousands of psi to as low as 30 psi with an accuracy level of +/&#x2212;1 psi. The regulator uses at least two oppositely oriented gas stages to reduce the pressure. The first stage performs gross pressure reductions and subsequent stages perform fine pressure reductions. The regulator easily connects to commercially available gas bottles and can easily activate or deactivate gas flow without needing to disconnect the gas bottle. The regulator has a compact design and can provide readings which can be integrated into computer, online, or dynamic systems.

Very small high pressure regulator

A separation column assembly for a gas chromatograph and the like is provided. The assembly is a self contained unit which allows very rapid heating and cooling of the column.

Gas chromatograph column assembly

A thermal conductivity detector comprises a housing having an internal cavity, a fluid inlet, a fluid outlet, a first bore and a second bore. The thermal conductivity detector further comprises a thermistor having a first electrical lead and a second electrical lead, a first contact pin in electrical communication with said first electrical lead and a second contact pin in electrical communication with said second electrical lead. The first contact pin is oriented within the first bore, the second contact pin is oriented within the second bore and the thermistor is suspended within the gas analysis chamber.

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Salt Lake City, UT, United States of America

John Blankevoort