Centrifugal columns, being structural parts for laboratory centrifuges, for the separation of substances; centrifugal columns, being structural parts for laboratory centrifuges, provided with integrated filters; spin columns, being structural parts for laboratory centrifuges, for the separation of substances; spin columns, being structural parts for laboratory centrifuges, provided with integrated filters; plasmid columns, being structural parts for laboratory centrifuges, for the separation ...