... nonpolar phase for separating hydrocarbons, polynuclear aromatics, nonpolar drugs, chlorinated pesticides, and PCBsPoly(phenylmethyldimethyl) siloxane (5 ... to separate fatty acid methyl esters, alkaloids, drugs, and halogenated chemicalsPoly(phenylmethyl) siloxane (50% phenyl ... Slightly more polar. Used to separate more polar drugs, pesticides, and glycolsPoly(tritluoropropyldimethyl) siloxane (Trade ...