Chromatography column and process for packing same
AssigneeMerck Patent GmbH
InventorsPeter Muller, Werner Gunkel, Gunther Sattler, Willi Wintermeyer
Life of this patent
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Abstract
Columns for high-pressure liquid chromatography utilize a tube which can be filled with a sorbent. The tube has an inlet device and an outlet device at the ends thereof and includes supporting elements therein to stabilize the sorbent packing.
Claims5
An improvement in a column used for high pressure liquid chromatography wherein the column includes a tube for containing a sorbent packing;
- the tube having inlet and outlet ends with coupling joints at each end and a filter at the outlet end, the improvement characterized by:
- a supporting framework within the tube adjacent the ends thereof and extending longitudinally from the ends into the tube for retaining the pressurized sorbent stabilized in the tube under pressure even when a coupling joint is removed from the tube;
- pressurized sorbent in the tube, the sorbent being introduced by filling the tube with the supporting framework therein under predetermined high pressure by suspending the sorbent material in a carrier liquid, the sorbent material being retained by the filter element while the carrier liquid passes through the filter element substantially unhindered, and
- a perforated plate positioned in at least one end of the tube outboard of the framework wherein sorbent under pressure is introduced into the tube through the perforated plate.
A process for filling a column for high-pressure liquid chromatography, where the column is closed at one end by means of an outlet device containing a filter element and filled under a predetermined high pressure from the other end via a filling device by means of a suspension of sorbent material in a carrier liquid;
- the sorbent material being retained by the filter element while the carrier liquid passes through the filter element substantially unhindered, the column being closed after being filled on the input side by means of a inlet device, the improvement characterized by the steps of:
- introducing and maintaining a supporting framework within the tube adjacent the ends thereof and extending longitudinally from the ends into the tube for retaining the pressurized sorbent stabilized in the tube under pressure even when a coupling joint is removed from the tube before the column tube is filled with sorbent packing through a perforated plate secured to the column tube at the end thereof to prevent depressurization of the sorbent packing subsequent to completion of the filling operation and to maintain pressure within the column during subsequent removal of the coupling.
Dependencies are inferred from the claim text.