When falling in a lighter miscible solvent, a drop of liquid deforms to a torus which then
breaks up into several fragments or just disappears by diffusion. By using liquids of different compositions
we show the universal behaviour of the phenomenon, and its dependence on two nondimensional
numbers, the fragmentation number F, and the Schmidt number S. While F marks the transition from
diffusion to splitting, here we show the role of S in controlling the number of horizontal fragments after
the first break-up. The process is explained in terms of competitions of different time scales.