The Dionex SRD-10 Suppressor Regenerant Detector is a stand-alone device that monitors liquid flow to a suppressor. If the flow is restricted or stops, the Dionex SRD-10 automatically disables the eluent pump via a TTL command, thus preventing irreversible damage being done to the suppressor. In the external water mode, if the water runs out in the source reservoir, then the suppressor would be powered without any regenerant flow; this condition results in irreversible damage to the suppressor. Installing the Dionex SRD-10 suppressor regenerant detector avoids this issue, as the system is turned off if the regenerant flow is interrupted either due to a plumbing leak or due to the source reservoir becoming empty.