Holder for holding test tubes at mixing device in e.g. laboratory, has arms with protrusions provided complementary to circle-like structure, and openings provided spatially complementary to divided hollow cylinder with height of holder

摘要

The holder (1) has arms (2) arranged around a central axis (3) and elastically bendable at transition points. Multiple semicircular protrusions are formed on lengths of the arms. Radius of each protrusion increases from inside to outside. The radii of the protrusions are smaller than radii of test tubes of approximately same diameters. The protrusions are provided opposite to each other and complementary to a circle-like structure made of two semicircles. Openings in the arms are provided spatially complementary to a divided hollow cylinder with a height of the holder.