Chromatography Media

Express-Ion® Ion-Exchangers Media. Whatman

Express-Ion® media are matrices whose flow characteristics have been greatly improved. The manufacturing process has been optimized so that the matrix retains its inherent property of fast kinetics of adsorption and desorption. Media characteristics are; EXPRESS-ION D: A weak anion exchange cellulose substituted with diethylaminoethyl (DEAE) groups and recommended for separations between pH 2 and pH 9. EXPRESS-ION Q: Strong anion exchange cellulose having general applicability in separations requiring an anion exchange step, with the benefit of wide pH versatility. The N,N,N-trimethyl hydroxy