| 摘要 |
The invention relates to a unit for grinding biological samples, comprising a grinding device including at least two tubes (3) having different sizes, which are suitable for being mounted onto a holder (2) of the grinding device (1), each tube (3) comprising an inner space having a height (h) along the axis of the corresponding tube (3), and intended to contain the samples to be ground, a holder (2) for carrying at least two different types of tubes (3), means for driving the holder (2) in precession motion, the holder (2) having an axis (4, X) the position of which describes a cone, each tube (3) being subjected to a displacement (d) defined by the projection, along the axis (Y) of said cone, of the distance between the end positions of a same point (P) of the tube (3) during the precession motion, the grinding device (1) and the tubes (3) being designed such that, for each tube, the d/h ratio is of 0.55 to 1, preferably of 0.6 to 0.8 and most preferably of 0.6 to 0.7. |
