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NT 156 is Intelligent Krebs viscometer which is upgraded from NT 154. It is used widely for making viscosity measurements on paints/coatings in accordance with ASTM D562. Digital version with constant speed motor rotating at 200 r.p.m can get greater accuracy and repeatability for test results.
The NT 126 & 127 series viscometers are commonly used to measure viscosity (also called apparent viscosity) of Newtonian or non-Newtonian materials at specified rotational speeds with selected spindles. High polymer materials such as coatings, inks and adhesives, as well as resins and emulsions, are mostly non-Newtonian liquids. They exhibit different rheological properties under different shear rates (related to rotational speed and spindle geometry).
