RHEOLOGIC and Smart RHEO are the most technically advanced laboratory capillary rheometers for the determination of the flow behavior of a wide range of materials. The computer controlled instruments offer testing abilities to measure shear viscosity, extensional viscosity, wall slip, melt fracture and rupture with a variety of dies and accessories. The two level software offers standard test control functionality as well as scientific evaluation capabilities for a better understanding of the data. Ergonomic design allows easy access and experimentation.