You can buy a lab centrifuge (such as Optima MAX from Coulter) that does 150 000 RPM, (or as a more useful measure, about a million g). These are often used for

You can buy a lab centrifuge (such as Optima MAX from Coulter) that does 150 000 RPM, (or as a more useful measure, about a million g). These are often used for virus purification. But isotope separation is usually done on UF6, which is a gas. These centrifuges work a bit differently, see https://en.wikipedia.org/wiki/Zippe-type_centrifuge https://en.wikipedia.org/wiki/Zippe-type_centrifuge