Gas Chromatography Columns with Integrated Ferrules
AssigneeThermo Finnigan LLC
InventorEdward B. McCauley
Life of this patent
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Abstract
A capillary column includes a fused silica tubing and a polyimide coating over the fusing silica tubing. Additionally, the capillary column further includes a first plurality of integrated ferrules positioned along at least a first portion of the fused silica tubing and spaced apart from one another by a first fixed interval.
Claims20
A capillary column comprising:
- a fused silica tubing;
- a polyimide coating over the fusing silica tubing;
- and
- a first plurality of integrated ferrules positioned along at least a first portion of the fused silica tubing and spaced apart from one another by a first fixed interval.
A method of manufacturing a capillary column, comprising:
- obtaining a polyimide coated fused silica tubing;
- and
- affixing a plurality of ferrules to the polyimide coated fused at a fixed interval from one another.
A method of using a capillary column, the capillary column including a plurality of integrated ferrules positioned along at least a portion of the capillary column and spaced apart by a fixed length, the plurality of integrated ferrules including a first ferrule and a second ferrule, the method comprising:
- unscrewing a nut securing the capillary column at the first ferrule;
- removing an end of the capillary column from an instrument;
- trimming the capillary column to remove an end portion including the first ferrule and leaving the second ferrule spaced from the end of the capillary column by a predetermined length of capillary column;
- inserting the predetermine length of capillary column into an opening of the instrument;
- and
- securing the capillary column in place with the nut.
Dependencies are inferred from the claim text.