Models 5418 and 5418 R are ultra-compact 18-place centrifuges that fits on even the smallest lab bench. ?About the size of a standard sheet of paper, it provides up to 16,873 x g (14,000 rpm) and offers a broad range of features that make your lab work easier. The centrifuge is whisper quiet—even when running without the rotor lid—to improve your work environment.