Patent ID: 7823745
Filing Date: 2010-11-02
Classification: B01L,G01N

Abstract:
1. A tube extending along a longitudinal axis comprising a container having a closed bottom end, an open top end, and a part that is adapted for flexible cooperation with a compartment of a rack for accommodation of the tube in such a way that in a first longitudinal position in the compartment, the tube is substantially free to rotate about the longitudinal axis of the tube in the compartment so that unintentional removal of the tube from the respective compartment is substantially prevented, and wherein the part adapted for flexible cooperation with a compartment of a rack comprises at least one of a protrusion positioned at a hollow part on the outside of the tube and a bead substantially covering the circumference of the tube wherein an outer circumference of a cross-section in a plane perpendicular to the longitudinal extension of the tube is non-circular for definition of at least one angular position of the tube so that when moving the tube into a second longitudinal position in the compartment, the tube can not be rotated in said second longitudinal position, and wherein the outer circumference comprises at least one protrusion for definition of at least one position of the tube in a compartment in which position the tube can not be rotated.