The Dionex IonPac CP1 Na+ Form column is a cation-exchange column in the sodium form, packed in a low pressure format. It is specifically designed for autosampler operation.
The Dionex IonPac CP2 H+ column is a higher-capacity version of the Dionex IonPac CP1 Na+ column packed in the hydronium form. It is recommended for large volume sample preconcentration applications using an external pump.
Note: Both cation polisher columns can be regenerated off-line every 2 to 3 months, depending on the level of contamination and usage.