The VT-04F Viscotester is a compact, single-cylinder type rotating viscotester designed for easy use in the field. It is used for high viscosity measurement. A rotor turning at constant speed is inserted into the liquid to be measured. The resistance to rotor movement caused by the viscosity is measured using a special mechanism to obtain direct readings in decipascal-seconds (dPa•s). Three different types of rotors are supplied, covering a wide range of applications.