Introduction to laboratory centrifuge selection and maintenance management
Laboratory centrifuge is a specialized equipment for rapid separation, concentration and purification of different sedimentation coefficient mixtures by centrifugal force generated by high-speed rotation. It is widely used in medical and health, blood stations, pharmaceutical plants, biomedical engineering, animal and plant research, etc. . A laboratory centrifuge is a device that produces constant acceleration. It is widely used in the fields of medicine, biology, and pharmacology to separate particles suspended in solution and to separate two different densities. Liquid.
Since different operating environments have different models for the selected laboratory centrifuges, only the centrifuges of the appropriate type can be used for the use of the centrifuges in the production process, and the industrial production can be improved. Overall efficiency. So how do people choose professional laboratory centrifuges for use in laboratories, hospitals, and food production and bioassays?
Laboratory desktop high-capacity high-speed refrigerated centrifuge TGL20MW
The type and structure of the laboratory centrifuge are expensive and the price is relatively expensive. When purchasing, it should be measured according to the needs of the work, so that the centrifuge can play its proper role economically and effectively. Usually should consider the following factors:
1 analytical centrifugation or preparation of centrifugation;
2 separate the size of the sample;
3 separate the capacity of the sample;
4 sample temperature requirements.
According to these factors, whether to purchase the analytical centrifuge or the centrifuge; whether the centrifuge is low speed, high speed or overspeed; whether it is a large capacity centrifuge, a constant or a micro centrifuge ; according to the temperature requirement, it needs a normal temperature centrifuge or a constant temperature Laboratory centrifuge. When the model is determined, the price of the centrifuge manufacturer (company) and the centrifuge should be considered. Generally, similar products can reach the main technical indicators, such as the rotational speed, the maximum centrifugal acceleration (relative centrifugal force), temperature, vacuum, capacity and so on.
Laboratory centrifuges, which are routine equipment for a laboratory, show differences in stability, safety, durability and humanity, simple and convenient maintenance, and the availability and reasonable price of consumable parts. There is also a matching problem in the purchase of centrifuges. Generally speaking, ultracentrifuges are limited to ultracentrifugation. It is not suitable for high-speed centrifugation and is not suitable for low-speed centrifugation. The same high-speed centrifuges are not suitable for long-time low-speed centrifugation. Promoted and used, it has achieved high and low speed universal, and can meet both high-capacity and low-speed freeze centrifugation and small-capacity high-speed centrifugation. From the perspective of scientific research and production in China, the low-speed and large-capacity centrifuges of the production units need the most, the scientific research units have the most low-speed centrifuges, the high-speed ones, and the ultra-speed applications are the least. The speed of the main engine of the centrifuge for work development can be appropriately increased. At present, the use of low speed and high speed is the largest, while the utilization rate of ultracentrifuge is low. The overspeed machine should be considered for its function and should not be purchased more. Analytical centrifuges are rare in practical applications and regional settings can be considered. Preparation and analysis of attachments is not suitable for analytical centrifugation work. At present, the ultracentrifuge has not been localized, so it is more prudent to purchase.
Laboratory high speed refrigerated centrifuge sample pretreatment equipment 3H16RI
After the model of the centrifuge is determined, what kind of centrifugal rotor is purchased, how much. The most important basis for consideration is the speed (or centrifugal acceleration, relative centrifugal force) and sample capacity that are commonly used within 3 to 5 years. To meet the needs of the work, it is not advisable to pursue the more complete, because there are many kinds of centrifugal rotors, and the centrifugal rotor of the overspeed machine is quite expensive. If all the price is higher than the centrifuge host, it will be several times higher. It is not necessary to speak. As mentioned above, the ultracentrifugal rotor is limited by the number of centrifugation, the number of centrifugation hours and the number of years. From the speed, it can be used in accordance with the use, and it is not suitable to pursue the higher the better, the difference in the price of the speed varies greatly. Blind purchases are a great waste. If you use a unit with more centrifuges, you can consider purchasing a small number of special rotors for accidental use.
In addition to the model and price performance considerations, the ultracentrifuge should also consider whether there are repair stations, technical levels and supply of spare parts in China. According to the previous domestic order, the maintenance data and circuit drawings are generally lacking in the models of imported centrifuges purchased, and these materials are the theoretical basis for repairing the instruments. Therefore, in the future, special emphasis should be placed on the foreign factories. Provide instrument maintenance materials and drawings.
Centrifuge management, from the use of centrifuges in many years in China, all types of centrifuges should be responsible and managed by special personnel. High-speed centrifuges and ultra-centrifuges require regular inspection and maintenance. Users should record the experimental status and maintenance in detail to ensure the safe use of the centrifuge. High and low speed centrifuges are easy to operate and can be used by themselves after reading the instructions. The structure of the ultracentrifuge is complicated, the working procedure is also cumbersome, and the accident is easy to occur, and the centrifugal head should be carefully maintained and used. From the perspective of domestic use and management for many years, the storage and operation of special personnel is the guarantee that the instrument is in good condition. Management and operation personnel should be trained so that they are not only familiar with the operation, but also should understand the basic principles and composition of the instrument.
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