Digital refractometer D-fructose concentration tester glucan concentration of fructose-glucan concentration refractometer tester fructose concentration of fructose refractometer refractometer fructose, lactose concentration of glucose concentration tester tester tester portable maltose concentration of maltose concentration meter Model measurement scale number Measurement Range Resolution Accuracy DR103 monosaccharide content tester Dextran dextrose S01 0.0--10.6% 0.1% ± 0.2% Fructose Fructose S02 0.0--68.9% 0.1% ± 0.2% Glucose glucose S03 0.0-- 59.9% 0.1% ± 0.2% Lactose Lactose S04 0.0--16.5% 0.1% ± 0.2% Maltose Maltose S05 0.0--15.60% 0.1% ± 0.2% Refractive Index S06 1.3330-1.4200nD 0.0001nD ± 0.0003nD