A rheometer is a laboratory device that measures the flow and deformation properties of materials, such as viscosity and viscoelasticity, in response to applied forces. It's a tool used in rheology research and is often used to analyze the rheological properties of polymer melts, solutions, suspensions, emulsions, coatings, inks, and food materials. Rheometers work by subjecting a sample to various types of stress, such as shear stress and deformation, and then measuring the relationship between the applied force and the resulting parameters. These parameters can include shear viscosity, elastic and viscous moduli, and more. To perform high quality analysis, it's important to properly adapt the geometry of the rheometer to the properties and conditions of the fluid being measured.
