The MA871 is an optical instrument that employs the measurement of refractive index to determine the % Brix of sugar in aqueous solutions. The method is both simple and quick. Digital Sugar Refractometer for general purpose with automatic temperature compensation (ATC).Range 0-85% Brix, resolution 0.1%, units come with battery. The measurement technique and temperature compensation employ methodology recommended in the ICUMSA Methods Book (Internationally recognized body for Sugar Analysis).