Abstract: A pressure-tight storage vessel contains a liquid, has an elongated main body rotationally symmetrical with respect to an axis of symmetry, and forms, at least partially, a rotationally symmetrical hollow space in which the liquid is substantially received, wherein the main body is terminated at its bottom side by a base. Furthermore, at its top side, the storage vessel has an opening which is closed off in a pressure-tight manner by a closure, has a plurality of reinforcement elements, which bears against the main body at the outside, which extends parallel to the axis of symmetry of the main body, and arranged rotationally symmetrically about the axis of symmetry of the main body. In each case between adjacent reinforcement elements, respective externally exposed wall sections of the main body are formed, and the composition of the exposed wall sections permits a pressure-tight insertion by at least two hollow needles.

Abstract: An apparatus is provided for holding down membrane elements in respective wells of a multiwell plate, which has, at its top side, respective openings of the respective wells. The apparatus has, at its upper region, a support structure having respective openings, and respective corresponding retention elements which extend downwards from the respective openings of the support structure, so that respective retention elements protrude into respective wells when the support structure has been placed onto the top side of the multiwell plate. A retention element has multiple webs which extend downwards from the support structure and the ends of which are connected to one another at a bottom side of the apparatus by means of a connection element.

Abstract: A pressure-tight storage vessel contains a liquid, has an elongated main body rotationally symmetrical with respect to an axis of symmetry, and forms, at least partially, a rotationally symmetrical hollow space in which the liquid is substantially received, wherein the main body is terminated at its bottom side by a base. Furthermore, at its top side, the storage vessel has an opening which is closed off in a pressure-tight manner by a closure, has a plurality of reinforcement elements, which bears against the main body at the outside, which extends parallel to the axis of symmetry of the main body, and arranged rotationally symmetrically about the axis of symmetry of the main body. In each case between adjacent reinforcement elements, respective externally exposed wall sections of the main body are formed, and the composition of the exposed wall sections permits a pressure-tight insertion by at least two hollow needles.

Abstract: The present invention relates to a pressure-tight storage vessel containing a liquid, wherein the storage vessel has an inner floor and an upper side and is closed in a pressure-sealing manner by a closure, and wherein the nature of the storage vessel allows pressure-sealing piercing with at least two hollow needles; and to a method for transferring a liquid from a storage vessel to a reaction vessel, the method comprising the following steps: supplying the storage vessel according to the invention, pressure-sealing piercing with a first hollow needle, which is connected to a rinsing-liquid tank, and pressure-sealing piercing with a second hollow needle, which is connected to the reaction vessel, introducing rinsing liquid from the rinsing-liquid tank, via the first hollow needle, into the storage vessel, the liquid being driven out of the storage vessel, via the second hollow needle, into the reaction vessel; and to an apparatus which is suitable for implementing the method according to the invention.