A new technique for controlling scale discreteness in a differential mobile refractometer

The necessity of measuring the refractive index of a liquid medium in the range from 1.230 to 2.830 with an accuracy of 0.0001 for unambiguous express monitoring of its state is substantiated. A methodology for controlling the discretization of the refractive indexmeasurement scale is proposed to transition from a measurement accuracy of 0.001 to 0.0001 without changing the laser and photodiode array or the distance between them. Using the new methodology on the previously developed design of a mobile refractometer with an Anderson differential cuvette, studies were conducted on various media and their mixtures. The results of the refractive index measurements obtained were compared with data from an industrial refractometer. The adequacy of the developed methodology and the feasibility of its use were confirmed.