Methods, rack and device for preparing samples for analysis
AssigneeGilson, Inc.
InventorMichel Kubacki
Life of this patent
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Abstract
In a solid phase extraction (SPE) device, once all the columns of the SPE plate are filled with liquid, the needles cooperate with engagement formations on a pusher element for pushing down the plate together with an upwardly biased shoe into sealing engagement with a peripheral spacer surrounding a container. Simultaneously, vacuum is applied by appropriate control of a valve and all the columns simultaneously transfer liquid into the drain container. Then, vacuum is released, needles engage recesses to move a carriage above a collect container and a similar prosecution is resumed.
Claims14
A method of preparing samples for analysis, comprising:
- injecting a liquid in a column of a plurality of columns of a movable plate located at a first position using a movable injection needle;
- moving the movable plate from the first position to a second position by coupling the movable injection needle with the movable plate and moving the movable injection needle;
- injecting a second liquid in the column of the movable plate located at the second position using the movable injection needle while the plurality of columns are open to the atmosphere;
- after injecting the second liquid, moving the movable plate downwards into sealing engagement with an underlying receptacle;
- after sealing, subjecting the underlying receptacle to a vacuum;
- drawing liquid from all of the plurality of columns into the underlying receptacle through a stationary phase provided in each column;
- and
- releasing the vacuum from the underlying receptacle.
Dependencies are inferred from the claim text.