An efficient protruded metal dump-packing for distillation columns of 1" to 12" dia. Self-wetting reduces equilibrium time. The dump feature eliminates interlocking, and makes filling and emptying as easy as pouring water. Suitable for both atmospheric and reduced pressures down to 10 mm Hg condenser pressure. Packed heights up to 20' are possible without distorting packing. 400 Monel. Minimum column dia. for 0.16" packing is 0.75".