G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 30/60 (2006.01) B29C 47/02 (2006.01) B29C 47/10 (2006.01) B29D 23/00 (2006.01) G01N 30/30 (2006.01) G01N 30/56 (2006.01)
Patent
CA 2635805
A multicapillary bundle for use in a gas chromatograph. Each of the capillaries in the bundle is formed using a coating solution containing a stationary phase and a solvent. The capillaries are coated with stationary phase by reducing pressure at a vacuum end of the capillary and creating a moving interface between the coating solution and a film of stationary phase deposited on each of the capillaries. The reducing pressure at the vacuum end of the capillary and the temperature of the capillary are controlled to maintain motion of the moving interface away from the vacuum end of the capillary. Maintained movement of the interface prevents recoating of the stationary phase. A heating wire and capillaries are embedded in a thermally conductive polymer to create a highly responsive method of heating the multicapillary column. An electronic control device controls the feedback temperature of the multicapillary column using the heating wire.
Christiansen David
Currie Ron W.
Lambert Anthony R.
Northern Alberta Institute Of Technology
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