ATS RheoSystems’ Black Pearl Viscometer is a high-performance rotational viscometer capable of both steady shear and yield stress testing in a rugged, compact-size footprint. Designed for performing both routine rheological tests, such as single-point viscosity checks for QC, to complex rheological evaluation for R&D, the viscometer can be used for investigating the mixing, stirring, and process flow characteristics of fluid systems. The unit comes standard with built-in Peltier Temperature Control for all measuring systems. Cone and plate, parallel plate, and concentric cylinder measuring systems are included. The measuring systems employ novel “Quick Capture” mounting technology. The gapping mechanism is accurate and user-adjustable. The viscometer has an angular velocity range from 0.01 to 200 rad/s, a torque range from 0.005 to 20 mNm, and a temperature range from -10 C to 120 C.