A mini centrifuge is a compact laboratory instrument used to spin small volumes of liquids at high speeds to separate components based on their density. These centrifuges are typically smaller and less powerful than regular laboratory centrifuges, making them suitable for applications such as quick microfiltration, sedimentation of particles, and quick spins of small samples. They are commonly used in molecular biology, biochemistry, and microbiology laboratories for tasks such as DNA/RNA extraction, PCR preparation, and cell pelleting.