A centrifuge that shakes, vibrates, or makes unusual noise is often warning the user that the load is not balanced. Balancing a centrifuge is one of the simplest but most important safety habits in daily laboratory work.
A laboratory may search for a sorvall centrifuge because the name is familiar, an older unit needs replacement, or the team wants a benchmark for speed, capacity, rotors, and safety.
Platelet-rich plasma preparation depends on careful blood separation, not just a simple spinning step.
A human centrifuge is not the small centrifuge machine used on a laboratory bench. It is a large training and research system that spins a person in a controlled way to simulate acceleration and g-force.