Product Description: Refractometers provide fast and accurate information on the sugar content of grapes and grape musts, berries, sweet fruits. pips and fruits to stone, as well as on unfermented grape juice. After the sample is applied to the prism, the refractometer's special optics create opposing fields of light and dark. The boundary between the two fields indicates the sugar content of the sample. With the refractometer you can: - Measure the Brix percentage of grapes or other fresh fruit - Determine the progress of grape ripening. coltes - Measuring the progress of fermentation -The quantity; of sugar present as well as the alcohol concentration in the grapes measure - Let the winegrowers determine if the fruit is at the maximum of its maturity. and must be harvested. Measuring range: 0-40% brix (mas sacch), 0-25% alcohol Resolution: 0.2% brix (mas sacch) , 0.2% alcohol Accessories: pipette, cleaning cloth, screwdriver and case. With this refractometer you can easily check the quality of the refractometer. grapes and brew your wine better!