ResinTech RSM-50-HP is a calcium form macroporous highly cross-linked hybrid strong acid cation resin. It is WQA Gold Seal Certified for use in potable water applications. Barium sulfate is monoatomically dispersed into the polymer resulting in a very long throughput capacity for radium on a one-time basis. RSM-50-HP is intended for radium removal from otherwise potable waters that contain modest concentrations of sulfate and neutral pH.