Apparatus for controlling the temperature of the mobile phase in

Details Apparatus for controlling the temperature of the mobile phase in Apparatus for controlling the temperature of the mobile phase in

1992-10-26

1993-08-24

Therkorn, Ernest G.

Liquid purification or separation

With means to add treating material

Chromatography

210143, 210181, 210656, 165164, B01D 1508

Patent

active

052385574

ABSTRACT:
Apparatus for controlling the temperature of a mobile phase in a fluid chromatographic system are provided which comprise both an ingoing capillary connected to an inlet of a column and an outgoing capillary connected an outlet of the column. A portion of the ingoing capillary and a portion of the outgoing capillary are arranged in thermal contact with each other to form a contact region wherein heat exchange can occur. In preferred embodiments, liquid leaving the column at an elevated temperature loses a portion of its heat, thus avoiding or at least substantially reducing the transfer of heat to the detector. At the same time, liquid flowing to the column is pre-heated by the liquid leaving the column so that the heating power required for bringing the mobile phase to the desired temperature is reduced as compared with prior art devices.

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