Closure for a reagent container

Process for the extraction of liquids from reagent containers, characterized by the following process steps a) Have a reagent container (7) closed with a closure, comprising closing an additional piece (6) for fixing to the container reagent (7) and a conical insert (4), inserting this into an opening of the additional part (6) and having a conical or pyramidal shape terminating in a tip in the direction of the reagent container, characterized in that the wall conical or pyramidal is divided into tongues by at least one incision on the opposite side of the reagent container has a bridge release (3) which is formed by a protuberance of the wall or by a reinforcement arranged on the wall, reaching these at least one wall incision through the bridge release and a pipette whose pipetting tip (1) is provided with a release sleeve (2); b) Vertical Introduction of the pipetting tip (1) in the center of the conical insert (4) of the closure until the end of the pipetting tip (5) sinks into the liquid being pressed outwardly the tabs of the bridge release (3) of the conical insert (4) by the release sleeve (2) so that the pipetting tip (1) does not touch the conical insert (4); c) aspiration or injection of the liquid; d) Vertical withdrawal of the pipette, closing again tightly tabs conical insert (4), as soon as the release sleeve (2) no longer press the tabs out.