Polystyrene/divinylbenzene copolymer: particle size 70 µm, pore size 80 Å, surface area 600-800 m²/g. It carries both hydrophilic and hydrophobic groups, retains polar and non-polar molecules well, has a wide pH stability and is popular in food analysis (manufacturer statement). The catalogue cross reference lists Waters Oasis HLB as its counterpart.
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