Liquid microvolume handling system

Chemistry: analytical and immunological testing – Including sample preparation – Volumetric liquid transfer

Reexamination Certificate

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Details

C436S174000, C436S176000, C436S179000, C422S091000, C422S105000, C422S105000

Reexamination Certificate

active

07323345

ABSTRACT:
The present invention relates to a microfluidic device comprising a microchannel (2, 4) providing for solvent contact between an open microarea (MA) carrying a microvolume (1) of a solvent and a reservoir (3) for the solvent, said reservoir (3) and said microchannel (2, 4) being adapted so that solvent evaporated from said microarea (MA) is continuously replaced by solvent from the reservoir (3) through said microchannel (2, 4). It further relates to method for replacing solvents evaporating from a microvolume (1) of solvent placed in an open microarea (MA) of a microfluidic device, wherein replacement is continuously taking place via a microchannel (2, 4) that transports solvent to the microarea (MA) from a solvent reservoir (vessel) (3). The device and method are suitable for preventing the desiccation of samples.

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