Total reflux distillation results of a comprehensive experimental study are reported for a new generation of Moritz high capacity structured packings. The major feature of the Moritz B1-M(R) series is a smooth bend in the bottom third of the corrugation with continuously increasing corrugation base width. A comparison is made with the performance of conventional structured packing under the same test conditions. The relationships between specific surface area, pressure. drop, capacity, and separation efficiency are discussed.