Typical Physical and Chemical Properties 1.Purity 99% . 2.Apperance : Brown spherical beads. 3.Polymer Structure�Gel polystyrene crosslinked with DVB 4.Functional Group: SO3 5.Ionic Form as Shipped: NA+ 6.Moisture Retention:45- 50 %  7.Uniformity Coefficient (max.) : 1.6 8.Complete exchange capacity (mmol/g):4.35 9.Wet apparent density (g/ml):0.77-0.85 10.Wet true density (g/ml) :1.25-1.28 11.Grainsize(0.315-1.25mm):�95 12.Sphere rate after abrasion %: �90 13.Temperature:120 C 14.Package : 25L Each Bag. 15.Comparison: PK228, AMB200/IRA-252,C-26S, MSC-1, CFP-110, SP-120, C-150/155