The total and dynamic liquid saturation under concurrent gas-liquid downflow through packed beds were experimentally measured for non-foaming, foaming Newtonian and non-Newtonian liquids. The variables include the column diameter, packing size and shape, flow rate of the phases, and physical properties. Correlations were presented in terms of Lockhart-Martinelli parameter, χ for non-foaming Newtonian and non-Newtonian liquids and in terms of modified Lockhart-Martinelli parameter, χ' for foaming Newtonian liquids.