Which centrifuge is commonly used?

Excuse me, could you elaborate on the centrifuge you're referring to? Is there a specific industry or application you're interested in? Generally speaking, centrifuges are widely used in various fields such as medical, industrial, and research settings. The choice of centrifuge depends on the intended purpose, sample size, and other specific requirements. So, if you could provide more context, I might be able to give a more accurate answer.