What Are The Categories Of Centrifuges?

Centrifuges are one of the most common general laboratory instruments, widely used in biomedicine, experimental research, petrochemicals, agriculture, food hygiene and other fields, many laboratories tend to pay attention to analytical instruments and neglect basic equipment, but the basic equipment, although simple in function, is equally important - the fine or not of sample processing, wet or dry material The results can be influenced by the sample handling, the dry and wet state of the material and so on.

How centrifuges work

Centrifuges use the principle of centrifugal sedimentation to separate, concentrate or purify cells (particles) of different densities in solution by centrifugal force. Centrifugal force is one of the most important parameters of a centrifuge and is generally used to describe a centrifuge in terms of speed, e.g. low speed centrifuge, high speed centrifuge, etc.

Classification of centrifuges

Centrifuges can be classified into different categories according to different criteria. There are four general classifications of centrifuges.

1. according to the size of the speed: low speed centrifuges (<10,000 rpm/min), high speed centrifuges (10,000 rpm/min to 30,000 rpm/min) and ultra high speed centrifuges (>30,000 rpm/min).

2. according to the temperature requirements: normal centrifuges and frozen centrifuges.

3. according to the different rotors: horizontal rotor centrifuges and angular rotor centrifuges; horizontal rotor: the basket is horizontal during operation, at right angles to the rotating shaft, and the sample will be concentrated at the bottom of the centrifuge tube. Angled rotor: the centrifuge vessel is at a fixed angle to the spindle and the sample is concentrated at the bottom of the tube and the side wall near the bottom.

4. centrifuges can also be classified according to their size: floor centrifuges, benchtop centrifuges, palm (mini) centrifuges, etc.