The RackCount™ System is a series of numbering overlays designed to fit securely on the top of several of the Code 200 Series racks. The overlays allow you to quickly and easily locate specific samples or collected fractions on the bed of Gilson GX Series or 215 Series racks by matching the tube numbers from the graphical sample tracking of TRILUTION® software to their actual on bed locations. This speeds up the process of finding targeted fractions, lowers costs and reduces the potential of user error.