1. Samples placed in the symmetrical sleeve with unbalanced load must be connected to the laboratory centrifuge tube and adjusted with a balance to achieve balance. If only one test tube is used to put the sample, the symmetrical test tube must be balanced by adding water, otherwise the instrument will vibrate during centrifugation and the test tube will break. It is easy to be overlooked that the centrifuge cup with the horizontal rotor will be out of balance after long-term use or replacement, so the centrifuge cup should also be balanced. For example, it is difficult to eliminate the failure of a centrifuge tube that has been used for more than 10 years. Later, it was found that the four centrifuge cups were too heavy, and the failure disappeared after the cup counterweight was changed.
2. Accelerating too fast centrifugation will easily break the laboratory centrifuge tube.