Centrifuges are widely used in biomedicine, petrochemicals, agriculture, food hygiene and other fields. It uses the difference in sedimentation velocity of different substances in the centrifugal force field to realize the analysis and separation of samples. After the 1970s, benchtop centrifuges have developed rapidly. Due to the simple structure, low cost, and small size of benchtop centrifuges, they quickly became routine instruments in the laboratory.
Domestic and foreign well-known centrifuge manufacturers almost all produce tabletop centrifuges, such as Germany's Heraeus, eppendorf, Slgma, Hettlch, and He, which are more active in China in recent years. Ie, Jouan of France, Beckman of the United States, Sorvall, IEC, Hitachi of Japan, Kubota. SANYO/MSE and so on. Domestic manufacturers include Beijing Medical Centrifuge Factory, Beijing Road Keshun Technology Development Co., Ltd., Shanghai Anting Scientific Instrument Factory, Hunan Instrument and Meter Factory Centrifuge Factory, and Tumen Centrifuge Factory.
Centrifuges are multi-disciplined and multi-technology high-tech products. There are many manufacturers and products. First, according to the application needs to determine the models, such as rotor, speed, capacity, temperature, etc., generally high-speed should not do low-speed, special should not be done universal, general-purpose centrifuges take into account the characteristics of high-speed and low-speed, large-capacity and micro-centrifuge, can be equipped with A variety of rotors are therefore welcomed by scientific research laboratories, but the price is high. After the model is determined, the technical data, technical performance, maintainability, and safety of the product should be further examined. Stability and reliability. Safety standards, price, shape and appearance and other factors.
Here are some of our suggestions for your centrifuge purchase:
1. Brushless motor is superior to DC motor smoke;
2. Microcomputer control is superior to discrete component control;
3. It is more practical to control and display the temperature of the sample than to control and display the cavity temperature;
4. The accuracy of the rotation speed and temperature is better than the low one;
5. The more perfect the security measures, the better;
6. The more standard certification projects, the better;
7. The automation program is better than low;
8. The function is better than less;
9. The matching range of the rotary head is narrower than that of the narrower;
10. The acceleration is faster than slower.
After the model is determined, it is not appropriate to buy the rotor, because the life of the rotor is limited by the number of centrifuges and the time. In addition, turning the head is expensive, so the main consideration is to purchase the rotors commonly used in the past three to five years. The after-sales service of the manufacturers is also a major factor in the inspection. The centrifuges are highly technical in maintenance, not only the inspection and repair problems, but also the quality and safety issues. After the centrifuges are overhauled or the safety components are inspected, they should be measured in time, such as unbalanced transmission. Sensing, speed and temperature accuracy, electrical safety and electromagnetic compatibility, etc., should be reminded to pay special attention to the user.
After many years of research, centrifuges and centrifuge technology are still continuously developed and improved. Brushless motors, multi-function, automation, computer control, safety and standards, and improvement of rotor quality and types are still the development of future desktop centrifuges. direction. Many centrifuges are contending with each other, and the quality, technical performance, after-sales service, and price of the products are still the focus of manufacturers and users.