Fast response thermochromatographic capillary columns

Details Fast response thermochromatographic capillary columns Fast response thermochromatographic capillary columns

1984-10-22

1988-02-23

Spitzer, Robert

Gas separation

With nonliquid cleaning means for separating media

Solid agent cleaning member movingly contacts apparatus

55197, 55386, 65 331, 2101982, B01D 1508

Patent

active

047268220

ABSTRACT:
A thermochromatographic column has a fused silica capillary with a high temperature chemically inert polymer coating thereon supporting a thin heater film formed by the deposition of either a high resistance metallic compound auto-catalytically from a solution of the compound or a nichrome film sputtered onto the polymer clad capillary tubing. The electrical contacts to the heater film may be either resistance welded thereto or the electrically conductive wires may be attached to the capillary body and integrated into the heater film during the deposition of the heater film. An outer layer of an electrically insulating material is applied to the heater film to electrically isolate the heater film and to protect the heater film from damage.

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patent: 4418984 (1983-12-01), Wysocki et al.

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