G - Physics – 01 – N
Patent
G - Physics
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G01N 35/00 (2006.01) B01D 11/00 (2006.01) B01L 9/06 (2006.01) G01N 1/34 (2006.01) G01N 30/06 (2006.01) G01N 33/94 (2006.01) G01N 35/02 (2006.01) G01N 1/40 (2006.01) G01N 30/00 (2006.01) G01N 35/04 (2006.01) G01N 35/10 (2006.01)
Patent
CA 2148201
An extraction cartridge, for extracting a component from a composition, contains a packing composition including a buffer composition, diatomaceous earth and absorbent. The cartridge is made by heating each component to assure it is free from contaminants. The diatomaceous earth is sifted to obtain a particular particle size. The cartridge also includes frits and filters for holding the packing composition within the cartridge. All of the components of the cartridge are selected or processed to assure that no contaminants are leached into the sample being extracted. A processing system automatically processes a plurality of cartridges. The processing system, which is capable of continuous operation, includes a platform, a rack for holding the cartridges, sample vials and extraction tubes. A walking beam conveyor system moves the rack along the platform and a system of robotic arms automatically transfers the sample to be extracted from the sample vial to the extraction cartridge and adds a predetermined amount of solvent into the extraction cartridge. The extraction process includes adding a sample into the extraction cartridge, waiting a predetermined time, adding a predetermined amount of solvent and collecting the solvent in a collection tube. The processing system can be controlled by a computer system including a dual microprocessor.
Burrows John Henry
Lessard Denis
Gowling Lafleur Henderson Llp
Phoenix International Life Sciences Inc.
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