Water Demineralization Ion Exchange Resin for Organics RemovalD301 Is a premium grade macroporous type strong base anion exchange resin with polystyrene matrix and quaternary amine (Trimethylamine) function group in standard. Its macroporous structure makes it can adsorb soluble organic molecules and can resist to osmotic & mechanical shock and oxidation. D301 could remove both strong and weak acid radicals such as sulfate, nitrate, arsenate, chromate and silicate to extreme low concentration level. Specification: Polymer Matrix Structure: Macroporous polystyrene crosslinked with divinylbenzene (DVB) Appearance: Beige opaque, spherical beads Functional Group: Tertiary amine (Dimethylamine)Application:Weak acid anion resin is a special ion exchange resin used in combination with activated carbon to remove organic compounds through adsorption. Ion exchange is used for desalination of seawater and removal of organic matter in the water treatment industry.