Profile: Burrell Scientific, Inc. manufactures quality scientific instruments and supplies for laboratories. Our products include portable gas analyzers, thermocouple welders & wrist-action shakers® and rheology equipment. Our extrusion rheometer determines the rheological properties of substances that will flow at room temperature with the application of pressure from 0 to 100psi, in a viscosity range of 1 to 1-million centipoises, and can be used for production control or quality control as well as for the determination of fundamental data.