Rheology is used to characterize visco-elastic solids and liquids for their ability to store and dissipate mechanical energy. Common properties that can be measured on visco-elastic solids (polymers and rubbers) are storage modulus, loss modulus, load relaxation and creep. Visco-elastic liquids can be characterized for a variety of properties including viscosity, flow curves and shear rate tests. Both rheometers are capable of scanning temperature in addition to the properties listed above.