Waters CORTECS Shield RP18 columns provides complimentary selectivity to C8 and C18 stationary phases. The embedded carbamate group in the bonded phase ligand provides alternate selectivity, especially for phenolic compounds.
Waters ACQUITY UPLC HSS CN chemistry is an ultra-performance general purpose propyl cyano bonded phase that provides superior peak shape for bases, increased retention, and extremely long column lifetimes at low pH.