multi column distillation plant designed based on finn-aqua which produces pyrogen-free sterile water for injection (wfi) which meets the requirement of ipbpusp .. The vapors with high velocity and under pressure passes over a SPECIALLY DESIGNED SPIRAL BAFFLE which develops tremendous centrifugal force and thus eliminates any chances of pyrogens carry over in the vapors. The columns, heat-exchanger, feed pumps, valves & instruments, control panel will be mounted on ss tubular structure.