Polymer structure:styrene crosslinked with dvb Ionic form, as shipped:hydrogen Screen size distribution:16 to 30 +16 mesh (u.S. Std):< 5% -30 mesh (u.S. Std);< 1% Uniformity coefficient (max.);1.4 Water retention (max.):3% Swelling ca2+ to na+ or na+ to h+:approx. 10% Total capacity:1.9 meq/ml min Shipping weight(approx.):0.76-0.80 g/l Temperature limit;120¡æ Woven bags lined with plastic bags inside.Net weight:25kg/bags