Abstract: Thermal isolation chambers that can be used to heat or cool a chromatography column are described. Certain configurations include at least one plate and an insulative barrier. The plate and insulative barrier can form a cyclical air flow path such that air in the cyclical air flow path can be provided to a chromatography column to remove heat from the chromatography column. The heat can be transferred to the plate. Systems including the thermal isolation chambers, and methods of using the thermal isolation chambers to perform chromatographic separations are also described.

Abstract: A system and method for performing field-portable GC/MS measurements for the rapid sampling and measurement of high temperature boiling semi-volatile organic compounds in environmental samples, wherein other column bundles have cold spots that may prevent high temperature boiling semi-volatile components from eluting the GC column, this new design may eliminate those cold spots on the GC column.

Abstract: A system and method for performing field-portable GC/MS measurements for the rapid sampling and measurement of high temperature boiling semi-volatile organic compounds in environmental samples, wherein other column bundles have cold spots that may prevent high temperature boiling semi-volatile components from eluting the GC column, this new design may eliminate those cold spots on the GC column.

Abstract: A system and method for performing field-portable GC/MS measurements for the rapid sampling and measurement of high temperature boiling semi-volatile organic compounds in environmental samples, wherein other column bundles have cold spots that may prevent high temperature boiling semi-volatile components from eluting the GC column, this new design may eliminate those cold spots on the GC column.

Abstract: Thermal isolation chambers that can be used to heat or cool a chromatography column are described. Certain configurations include at least one plate and an insulative barrier. The plate and insulative barrier can form a cyclical air flow path such that air in the cyclical air flow path can be provided to a chromatography column to remove heat from the chromatography column. The heat can be transferred to the plate. Systems including the thermal isolation chambers, and methods of using the thermal isolation chambers to perform chromatographic separations are also described.

Abstract: Certain configurations described herein are directed to gas chromatography devices. In some instances, the gas chromatography devices may comprise at least one heating device which can be moved along a chromatography column to provide a thermal gradient to the chromatography column. In other instances, the gas chromatography devices may comprise a heating device that can receive a moving chromatography column to provide a thermal gradient to the chromatography column. The gas chromatography devices may be configured as portable devices which can be used to perform remote analyses.

Abstract: A system for preparing a test sample includes a vial holder, a needle trap connected to the vial holder, and a sample preparation station. The vial holder includes a vial chamber configured to hold a vial, a purge gas needle, and a needle trap heater. The needle trap includes a needle with the needle trap heater surrounding a distal end portion of the needle. A packing bed is disposed in the needle at the distal end portion. The sample preparation station includes a housing and a vial heater assembly including a vial heater and defining a cavity. The vial holder is configured to be received in the cavity in an installed position with the vial heater surrounding at least a portion of the vial.

Abstract: Certain configurations of devices and systems which are configured to draw a selected volume of an air sample into a trap are described. In some examples, the devices and systems comprise a pump and a mass flow sensor to draw a selected volume of the air sample through a trap even where variable restriction occurs.

Abstract: A system for preparing a test sample includes a vial holder, a needle trap connected to the vial holder, and a sample preparation station. The vial holder includes a vial chamber configured to hold a vial, a purge gas needle, and a needle trap heater. The needle trap includes a needle with the needle trap heater surrounding a distal end portion of the needle. A packing bed is disposed in the needle at the distal end portion. The sample preparation station includes a housing and a vial heater assembly including a vial heater and defining a cavity. The vial holder is configured to be received in the cavity in an installed position with the vial heater surrounding at least a portion of the vial.

Abstract: A system for preparing a test sample includes a vial holder, a needle trap connected to the vial holder, and a sample preparation station. The vial holder includes a vial chamber configured to hold a vial, a purge gas needle, and a needle trap heater. The needle trap includes a needle with the needle trap heater surrounding a distal end portion of the needle. A packing bed is disposed in the needle at the distal end portion. The sample preparation station includes a housing and a vial heater assembly including a vial heater and defining a cavity. The vial holder is configured to be received in the cavity in an installed position with the vial heater surrounding at least a portion of the vial.

Abstract: Certain configurations described herein are directed to gas chromatography devices. In some instances, the gas chromatography devices may comprise at least one heating device which can be moved along a chromatography column to provide a thermal gradient to the chromatography column. In other instances, the gas chromatography devices may comprise a heating device that can receive a moving chromatography column to provide a thermal gradient to the chromatography column. The gas chromatography devices may be configured as portable devices which can be used to perform remote analyses.

Abstract: A system for preparing a test sample includes a vial holder, a needle trap connected to the vial holder, and a sample preparation station. The vial holder includes a vial chamber configured to hold a vial, a purge gas needle, and a needle trap heater. The needle trap includes a needle with the needle trap heater surrounding a distal end portion of the needle. A packing bed is disposed in the needle at the distal end portion. The sample preparation station includes a housing and a vial heater assembly including a vial heater and defining a cavity. The vial holder is configured to be received in the cavity in an installed position with the vial heater surrounding at least a portion of the vial.

Abstract: Certain configurations described herein are directed to gas chromatography devices. In some instances, the gas chromatography devices may comprise at least one heating device which can be moved along a chromatography column to provide a thermal gradient to the chromatography column. In other instances, the gas chromatography devices may comprise a heating device that can receive a moving chromatography column to provide a thermal gradient to the chromatography column. The gas chromatography devices may be configured as portable devices which can be used to perform remote analyzes.

Abstract: Certain configurations of devices and systems which are configured to draw a selected volume of an air sample into a trap are described. In some examples, the devices and systems comprise a pump and a mass flow sensor to draw a selected volume of the air sample through a trap even where variable restriction occurs.

Abstract: A system and method for performing field-portable GC/MS measurements for the rapid sampling and measurement of high temperature boiling semi-volatile organic compounds in environmental samples, wherein other column bundles have cold spots that may prevent high temperature boiling semi-volatile components from eluting the GC column, this new design may eliminate those cold spots on the GC column.

Abstract: Certain configurations described herein are directed to gas chromatography devices. In some instances, the gas chromatography devices may comprise at least one heating device which can be moved along a chromatography column to provide a thermal gradient to the chromatography column. In other instances, the gas chromatography devices may comprise a heating device that can receive a moving chromatography column to provide a thermal gradient to the chromatography column. The gas chromatography devices may be configured as portable devices which can be used to perform remote analyses.