https://www.cencelab.com/products/h2050r-1-4x750ml-high-speed-refrigerated-centrifuge.html H2050R-1 Large-Capacity High Speed Refrigerated Centrifuge 12 kinds of rotors are available for H2050R-1. Not only 4*750ml large capacity rotor, but also small rotor with high speed 20500rpm. It's a powerful and versatile universal centrifuges, which is widely used in radioimmunoassay, bio-pharmaceutical, medical inspection and scientific research in universities.