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Centrifuges are essential equipment for laboratory and clinical medicine, but many laboratories tend to focus on analytical clinical testing while ignoring basic equipment. Centrifuges are one of the most commonly used basic equipment, and are widely used in hospital laboratories, centrifuges to separate serum, precipitate tangible cells, concentrate bacteria, PCR tests and other essential tools.
During the high-speed rotation of the centrifuge, the movement caused by the centrifugal force causes the solid matter suspended in the liquid to form a sediment, that is, the mass or volume of the suspended body fluid moves to the direction of the largest radius of the rotor, and the mass or The smaller part is deposited near the radius of the rotor. Above we mentioned the concept of centrifugal force. Centrifuge is a machine that generates centrifugal force. The centrifugal force is related to rotor radius, rotation speed and sample quality: F=Rmω2 (F: centrifugal force: R: radius: m: sample mass: w: speed). Centrifugal force is the most important measure of centrifuge. One of the parameters is also one of the distinguishing standards of the centrifuge grade. The centrifuge will give the maximum speed and centrifugal force of the centrifuge when it leaves the factory. We all know that the radius of the rotor and the quality of the sample are constant during operation. Only the speed can be changed by control, so we tend to use the speed to describe a centrifuge. Such as: high-speed centrifuge, ultra-high speed centrifuge.
Introduction, principle, classification and how to choose a centrifuge
Introduction to the centrifuge and how to choose
First, the working principle of the centrifuge
Second, the classification of centrifuges
1, according to the size of the speed can be divided into: low-speed centrifuge, high-speed centrifuge and ultra-high-speed centrifuge;
2, according to the temperature requirements can be divided into: ordinary centrifuges and refrigerated centrifuges
3, according to the different rotors: horizontal rotor centrifuge and angle rotor centrifuge;
4, according to the size of the centrifuge can also be divided into: floor-standing centrifuge, desktop centrifuge, handheld centrifuge, etc.;
5, according to the grade of the centrifuge can also be divided into ordinary centrifuges and precision centrifuges .