The Rotary - Viscometer Black One determines the viscosity of a fluid. Measurement with the rotation - viscometer made by the rotation of a rotating body according to DIN 2555. Over the torque which has to apply the rotational viscometer, to rotate the rotary body in the fluid, and the known geometry of the rotational body and receptacle are drawn conclusions as to the viscosity. Thus, the rotational Black One is able, the viscosity of fluids between 20-156000000 mPa.s to determine. To thixotropic, i.e. measure time-dependent non-Newtonian fluids that change their viscosity under load, to be able, at a fixed rotational measurement time can be set. In addition, you can choose between 21 different speeds. Through his callow engineering and robust design the rotational Black One is extremely reliable. The digital display of the rotational viscometer is capable of displaying the speed, the torque measuring system, the viscosity and the time. The operating range of rotational stretches from the food and cosmetic industries across the color production to the chemical and building materials industries. Another field opens up to the rotational Black One at universities, colleges and other educational establishments.