“…Analysis of hydraulic permeability data in the light of mosaic membrane model [29][30] further supports the existence of the liquid membrane in series with supporting membrane. Following the arguments given earlier 3 it can show that concentration of the surfactant is n' times its CMC, n being less than or equal to 1, the value of Lp would be equal to [ Table 1. It was earlier reported that 1.919×10 -5 M lecithin aqueous solution form liquid membrane, which completely covers the supporting membrane indicate the fall in Lp values when 1 CMC solution was added to the compartment C, which provides additional evidence regarding incorporation of Ertapenem in lecithin membrane 31 .…”