Laboratory centrifuge selection notes

In the chemical, petroleum, pharmaceutical, energy and other industries, centrifuges as a professional equipment that can separate the solid phase and liquid phase in the glue, it is very important to understand its performance before the purchase to meet the needs of the test. Then, as the company's procurement staff, what performance should be understood before purchasing the centrifuge, what performance characteristics should be paid attention to when purchasing? Here, let's take a brief look at what to pay attention to when buying a centrifuge.

First, pay attention to the speed of the centrifuge

Different industries, different workloads, the centrifuge speed used in the laboratory is different. In the current centrifuge sales market, it can be divided into low speed, high speed and ultra high speed centrifuges depending on the speed. Among them, the speed of the low-speed centrifuge is below 10,000 rpm, the speed of the high-speed centrifuge is between 10,000 and 30,000 rpm, and the ultra-high-speed centrifuge is above 30,000 rpm. Here, the company's procurement staff needs to know the speed of the centrifuge during the experiment. When the purchaser needs to be reminded of a little, the rated speed of the centrifuge is mostly the number of idling revolutions. In actual work, the actual speed of the centrifuge is not small because of the addition of the sample. At the same time, because of the difference in the size and type of the rotor of the device, there will be some deviation in the actual speed. Therefore, it is recommended that the purchasing personnel must select the equipment that is higher than the expected speed when selecting the speed.

Second, pay attention to the size of the centrifuge

The number of different glue samples required is different, which determines the size of the centrifuge to focus on the centrifuge. So how do you determine the amount of capacity needed to select a sample in a different industry? In simple terms, the number of sample tubes and the size of each sample tube need to be determined in advance. The total capacity is also the sum of these sample tubes. In general, the larger the workload, the larger the total capacity required, and the smaller the workload, the smaller the total capacity requirement.

Third, the rated temperature of the centrifuge

Different samples require gel separation experiments at different temperatures. Once the separation experiment is carried out at the temperature it requires, it may destroy the intrinsic structure of the sample, leading to failure of the experiment. In those areas where a refrigerated centrifuge is required, care should be taken when purchasing a refrigerated centrifuge to balance the heat of the centrifuge with the refrigeration system at a stable temperature and to ensure that the performance of the sample is not compromised at this temperature. As for the level of the equilibrium temperature, in addition to the rated temperature of the centrifuge, it is the type of the rotor. Generally, the temperature of the horizontal rotor is lower than the temperature generated by the angle rotor.

In addition, the control system of the centrifuge, the type of motor, and the size of the noise are also important factors that need to be carefully selected by the purchasing personnel according to the requirements of their own experiments.

Hunan Hengnuo Instrument Equipment Co., Ltd. Original:

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