Shodex IEC SP Series (SP-420N, SP8, SP-825, SP-2025, SP-5025)
Packed with an ion-exchange resin made by bonding ion-exchange group to hydrophilic and totally porous gels, Shodex IEC series columns are designed for use in high-speed ion-exchange chromatography. Being polymeric, the column packing is more advantageous than silicic packings in that it can be used in a wider pH range. Those columns are well suited for separation of proteins, peptides, and the components of nucleic acids among others.