The Thermo Scientific^™Dionex^™IonPac^™CTC-1 and CTC 500 Cation Trap Columns contain high-capacity, low-efficiency, cation-exchange resin in the hydronium ion form, to remove trace cation contaminants from eluents. The trap is installed in the eluent line prior to the injection valve to prevent spurious peaks and reduce baseline shifts during gradient chromatography. The Dionex IonPac CTC 500 supports HPIC^™system pressures up to 5000 psi (34.5 MPa). For RFIC^™MSA eluent generation applications, use the Dionex CR-CTC.