The Eluent Suppressor in the Dionex SC-CERS 500 uses dilute MSA and electrolysis as the regenerant and has the ability to provide continuous suppression. See Recommended current settings to determine the correct amount of current that should be applied to a Dionex SC-CERS 500.
Always operate the Dionex SC-CERS 500 at the lowest current setting that will suppress the eluent. Increasing the current setting will not improve the performance and could damage the suppressor. The operation of the Dionex SC-CERS 500 requires a constant flow of the water over the membrane, in a direction that is concurrent to the flow of the eluent.
In the AutoSuppression Recycle Mode, the eluent leaving the conductivity cell is recycled through the regenerant chambers as the water supply. This eliminates the need for an external regenerant water supply. See the following figure.
When the Dionex SC-CERS 500 is operating in this mode, the amount of water flowing through the regenerant chambers is limited to the eluent flow rate. Because of this limitation, the AutoSuppression Recycle Mode cannot be used with eluents containing organic solvents. The Dionex SC-CERS 500 should be operated in the AutoSuppression External Water Mode for eluents containing organic solvents