FIG. 1 shows a top view of a rotor for a centrifuge according to my new design;

FIG. 2 shows a side elevational view of the rotor for a centrifuge shown in FIG. 1;

FIG. 3 shows a bottom view of the rotor for centrifuge shown in FIGS. 1-2 ; and,

FIG. 4 is a cross-sectional view of the rotor for a centrifuge, taken from the line 4—4 of FIG. 1.