Both Model 3100 and 3200 are a complete peristaltic system that includes everything needed to get started: 25 ft. of general PVC tubing to connect the pump to the application, 6 precision silicone tubing cartridge assemblies (2 1.6 mm, 2 3.2 mm, and 2 4.8 mm), pump, and pump head. They are virtually maintenance free (except for changing the tubing). Both models have no seals or valves that can leak. The systems are able to run dry, self-priming, and sterilizable.