PS-DVB (polystyrene divinylbenzene resin) and PS-DVB ENV (hydroxylated polystyrene divinylbenzene resin) are ideal for polar water-soluble analyte extraction from aqueous samples. PS-DVB ENV has a very high surface area, offering excellent retention of very polar analytes including phenols and phenoxyacid herbicides from environmental samples and drug metabolites from biological fluids. Columns are made of polypropylene and feature Luer-slip outlet.