... capacity premium grade bead form conventional gel polystyrene sulphonate cation exchange resin. Polymer Matrix StructureCrosslinked Polystyrene DivinylbenzenePhysical Form and AppearanceClear spherical beadsWhole ... +5% max.Specific Gravity, moist Na+ Form1.27Total Exchange Capacity, Na+ form, wet, volumetric1.9 eq/l ... Form150°C (300oF) max.pH Range, Stability0 - 14 Gel Strong Acid Cation Exchange Resin