Abstract: A lidded vessel made of plastic for treating samples in the laboratory having a vessel having a tubular vessel body, a vessel floor at the bottom, a vessel opening at the top, and a circumferential first sealing region on or near the vessel opening, a lid having a lid floor and a circumferential second sealing region for sealing against the first sealing region, at least one apparatus for releasably attaching the lid to the vessel when the first sealing region is in sealing contact with the second sealing region, wherein the lid has, on the upper side, a series of divisions running around the central axis of the vessel for marking an alignment of the lidded vessel in a laboratory device for treating a sample in the lidded vessel and/or for marking a division representing a sample filled into the lidded vessel and/or for marking a division representing a treatment step of a sample in the lidded vessel.

Abstract: A lidded vessel assembly comprises a tubular vessel, a lid, and a latching device. The tubular vessel defines a vessel opening and comprises a vessel base, an inner wall, a sealing area and a parking area both defined on the inner wall and both positioned below the vessel opening. The lid comprises a lid base having an inside surface, and a plug projecting from the inside surface of the lid base. The plug is configured to be inserted through the vessel opening to engage the parking area to define a parking position, and configured to be further inserted through the vessel opening out of the parking area to bias against a portion of the sealing area to define a sealing position. The first latching device comprises a first latching element positioned on the inner wall of the vessel, and a second latching element positioned on the outside of the plug.

Abstract: A lidded vessel assembly comprises a tubular vessel, a lid, and a latching device. The tubular vessel defines a vessel opening and comprises a vessel base, an inner wall, a sealing area and a parking area both defined on the inner wall and both positioned below the vessel opening. The lid comprises a lid base having an inside surface, and a plug projecting from the inside surface of the lid base. The plug is configured to be inserted through the vessel opening to engage the parking area to define a parking position, and configured to be further inserted through the vessel opening out of the parking area to bias against a portion of the sealing area to define a sealing position. The first latching device comprises a first latching element positioned on the inner wall of the vessel, and a second latching element positioned on the outside of the plug.