Electric centrifuge is a commonly used separation technology equipment in biology teaching and laboratory. It separates different components in the sample by density or size through centrifugal force generated by high-speed rotation. Electric centrifuges are typically equipped with multiple rotors that can accommodate centrifuge tubes of different capacities and types. In biology teaching, electric centrifuges can be used for various experiments such as cell separation, protein purification, DNA extraction, etc. By using an electric centrifuge, students can learn the basic principles of material separation and understand the application of centrifugation technology in biological research. Electric centrifuge is a very important tool in biology experimental teaching, which helps cultivate students' experimental ability and scientific research methods.