The Pump Module uses a precision, positive displacement pump to provide a highly stable, metered flow of process water to the TOC sensor to ensure reliable and consistent TOC measurement performance. This accessory is recommended for applications where system pressure is either too low to provide adequate flow through the TOC sensor, or for low-pressure applications where system pressure may vary routinely during operation. The Pump Module is ideally suited for applications such as distillation, RO permeate, CIP and pharmaceutical washing