A collection of sterile devices designed to be used in the function of an automated peritoneal lavage system (APLS). It typically includes tubing to connect the infusion/extraction pump mechanism of the control unit and the other components of the system [also known as the lavage administration set (LAS)], a peritoneal lavage catheter, a heat exchanger, a core body temperature probe (e.g., oesophageal), an infusate temperature sensor, a peritoneal pressure sensor, waste receptacle, and other appropriate devices for this treatment. This is a single-use device.