In silver-silica gel fractionation of fatty acid esters, saturated esters elute first, followed by unsaturated ones. The number, position, and geometric configuration of double bonds determine the order of elution of unsaturated fatty esters. The resolving power of Ag-silica gel is attributed to reversible charge-transfer complexation of Ag+ with carbon-carbon double bonds. The extent and the strength of complexation control the mobility of a solute and so does the polarity of the mobile phase. The loading of the silver ion on the gel also affects the retention time of a solute because the loading determines the surface density of Ag+ ions on the solid matrix and this in turn influences the frequency of complexation during elution. The areal density also determines whether a molecule of polyunsaturated fatty ester will simultaneously complex with silver at multiple sites. Simultaneous multipoint complexation does not seem plausible during fractionation of cod liver oil fatty esters when the silver loading on the solid phase does not exceed 1.875 × 10−7 kg Ag+ per m2 of surface [14]. In our case, the estimated areal loading of Ag+ was 1.27 × 10−7 kg per m2 of surface; therefore, a molecule of an unsaturated ester apparently interacted with only one silver ion at any given instance.