Packing Type Void Fraction, ε HETP* (m) ΔP (mm H2O/m packing) ** 1” HYPAK® 0.96 0.40 11.67 IMTP®#40 0.98 0.40 5.83 *HETP is for a standard test of iso-octane/toluene at 98.4 kPa in a packed tower (15.2 in diameter and 10 ft height), capacity factor = 0.20 ft/s. **ΔP is for a standard test of Air/Water system (inlet gas rate = 1.10 kg/(m2.s), liquid rate = 6.8 kg/(m2.s) in packed bed (30 in diameter and 10 ft height).

Table 1: Random packing characteristics: IMTP® #40 [7] vs. 1” HYPAK® [8]. Further details about IMTP® #40 can be found elsewhere [7].