Because centrifugal samples are mostly corrosive, even ordinary tap water corrode the aluminum rotor. Dual corrosion fatigue occurs under the coexistence of stress corrosion and chemical corrosion, which leads to the reduction of the actual life of the rotor compared with the guarantee life. In order to avoid this situation, users should always carefully observe the corrosion-prone rotor parts, such as the bottom of the test tube hole, the rotor bottom and the spindle connection, as well as the upper part of the rotor threads and so on.



High-speed and low-speed centrifuge rotors simply use years to specify the life of the rotor, aluminum alloy rotor is generally 5 years. This is obviously not very scientific. Some manufacturers also use the number of running times or running time. If a rotor uses 20h almost daily, it will not take 5 years. But the centrifuge has not been used for many years, but it has been set by the manufacturer for five years. Most scholars in China think that the centrifuge rotor is still available, but it can be moderately slowed down.



For centrifuge rotors, it is generally stipulated that the aluminum rotors run 1000-1500 times or 1000-1500 hours, and then the speed should be reduced by 10% using the same number of times and time; the titanium rotors are guaranteed to use 5000 times or 10000 hours. If some of the rotors are not used for a long time, the inner metal structure of the rotor will change, and it should also be used for speed reduction. The guarantee period is 5 years. Therefore, users are required to keep track of the running times and accumulative running time of each rotor. Due to the development of science and technology, the rotor of the recent ultra-speed centrifuge has a built-in intelligent memory system, which automatically completes the cumulative record without the user having to make the record himself.