Importance

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Abstract

An apparatus and method of using a pipette with pipette tip columns were developed in which a pipette is operated with the pipette tip columns inserted into the wells of a microplate. In this configuration the pipette is free standing and is essentially perpendicular to the microplate. The pipette is hand-held when transferring between positions, e.g., between operation steps that take place in different rows of wells. The open lower ends of the pipette tip column are approximately centered within the plate well. The columns and plate are designed in such a way that the open lower ends of the pipette tip columns are in contact with liquid in the plate well however, the columns do not seal on the well bottom, preventing flow in and out of the column. The pipette contains the appropriate firmware and software to control flow for all steps of pipette tip column operation. In some embodiments, cells are purified from biological samples.

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First Claim