test Sugar, Wine, Alcohol, Honey, Salinity, Refractive index, Serum Protein, Brake-Check, Battery, Coolant, Clearance and so on ... Portable Refractometers to test Sugar, Wine, Alcohol, Honey, Salinity, Refractive index, Serum Protein, Brake-Check, Battery, Coolant, Clearance and so on ... )0.5% VBR90S0~42%0.2% 42~71% 71~90% Refractometer