Hydrophilic-lipophilic balanced N-vinylpyrrolidone-divinylbenzene resin for SPE. Pore size 65 Å. Specific surface 750 m2/g. Applicable for a wide range of analyte polarities. Enhanced retention for polar compounds. High loadability and outstanding performance. Water wettable – even if bed runs dry, SPE can be continued. The alternative to Oasis HLB.