Should be at least 80% full for high-speed centrifugation and used with push-in stoppers (05-562-11 series) Centrifuge samples effectively and repeatedly with success thanks to the outstanding mechanical strength and high optical clarity of Thermo Scientific™ Nalgene™ Centrifuge Tubes for high-speed applications with round-bottom polycarbonate designed for high-speed rotors.Meer tonenMinder tonen