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The testing and calibration of the rotating viscometer were done by direct measurement of some standard liquids viscosity - aqueous glycerol or ethylene glycol solutions- and comparison with data measured on a standard viscometer (Rheotest). Formulas are presented for physical data that define the liquids rheological behavior: shear rate γ , shear stress τ and viscosity η, particularized for this rheometer. Also, it was established the correction factor for the rotor end effect.

Keywords: gap, rotating viscometer, shear rate, shear stress, viscosity