Apparatus for applying liquid samples to surfaces
AssigneeCAMAG Chemie-Erzeugnisse und Adsorptionstechnik AG
InventorDieter Janchen
Life of this patent
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Abstract
An apparatus for applying liquid samples to surfaces, particularly to the separating layer used in thin-layer chromatography and comparable techniques, consisting of a guided pipette which contains the sample, can be placed on the surface with an adjustable contact pressure and which can be removed therefrom again, the apparatus having an electromagnet, the strength of the magnetic field of which can be adjusted so that it holds the vertically freely movable pipette hovering at the required height in relation to the surface, lifts it away from the surface or allows it to rest on the surface under the influence of the force of gravity.
Claims8
In an apparatus for applying at least one liquid sample to a separating surface comprising
- electromagnet means having a vertically disposed opening extending therethrough;
- pipette means for containing said liquid sample and being located within said vertically disposed opening, said pipette means being responsive to said electromagnet means and being freely movable within said vertically disposed opening;
- and
- energizing means for energizing said electromagnet means so that (a) said pipette means is suspended over said surface in response to the electromagnet means being energized, said suspension of the pipette means being effected only by said energizing means and (b) the pipette means falls under the influence of gravity to said surface in response to the energization of said electromagnet means being reduced so that said liquid sample is applied to said surface.
Dependencies are inferred from the claim text.