A rheometer is a laboratory device used to measure the fluid properties and rheological behaviour of materials. Rheometers are designed to test samples under a given temperature and a given pressure with varying conditions. These tests are used for the characterization and quality control of various materials (plastics, foodstuff, cosmetics, pharmaceuticals, dyes and coating products, oil products etc.) used in various industries. Rheometers are widely used by material engineers, chemists, food scientists and other professionals.