reference: R142:2008 2.1

ID: 02116

instrument for measuring the refractive index. If the refractometer is provided with another scale or an additional scale calibrated in the units of the fraction of soluble dry substances in aqueous solutions, which are recognized by the international organizations, e.g. the International Sucrose Mass Fraction Scale, %mass (Brix), then the refractometer shall be accompanied by a conversion table for the refractive index values