System and method for the automation of column and media packing
View Patent ↗This invention provides for the fully automated, hands free, packing of chromatography columns by means of delivering a pre-calculated volume of slurry and using two different packing modalities to stop the packing when either 1) this volume has been delivered in the column, or 2) when the adapter is moved to reach a bed height corresponding to the pre-calculated volume. Thus, a chromatography column can be packed in a fully automated fashion and such a column is 1) stable and 2) has the desired performance characteristic.
1. A method for automating column packing comprising:
determining a slurry concentration for a slurry of a chromatography medium;
determining a column volume in a chromatography column;
determining a compression factor in the chromatography column for the chromatography medium;
calculating a volume of the slurry needed for packing the volume with the determined compression factor, the calculation being based on the determined column volume, the determined compression factor and the determined slurry concentration;
configuring the calculated volume of the slurry in a slurry tank;
positioning a movable adapter of the chromatography column at a first position;
positioning or opening a media valve that allows for delivery of the calculated volume of the slurry into the chromatography column;
consolidating the chromatography medium;
automatically lowering the movable adapter to a second position in order to compress the chromatography medium to the determined compression factor; and
automatically terminating the packing of the column by terminating the delivery of the slurry to the chromatography column when an optimal column bed height is reached.
2. The method of claim 1 , wherein the optimal column bed height occurs when the movable adapter has displaced a volume of liquid equal to a difference in volume between the first position of the movable adapter and the second position of the movable adapter.
3. The method of claim 1 , wherein the media valve is from the group consisting of nozzle, slurry port and slurry valves.