Labo VinSugar measuring by refractometry
The measurement of the sugar concentration of a fruit juice is based upon the measurement of the refractive index of the sugar solution. The refractometer can be calibrated directly in g/L sugar; in this case, no problem, or in Brix degrees.
Labo Vin converts the Brix degrees in g/L sugar.
Warning: the refractometer cannot be used with a fermented must containing alcohol.