| Invest in a hydrometer, which measures the specific gravity of liquids, available at winemaking supply shops. |
| The surface level of the water will mark the specific gravity level and the potential alcohol level, both labeled on the hydrometer. |
| This is a hydrometer which is based on the principle that dissolved substances will cause a body to float. |
| With this method, the hydrometer is incorporated into a precision lifting mechanism for easy and exact positioning in the test liquid. |
| Here the syrup is boiled carefully to attain the correct sugar density as measured with a sugar hydrometer and filtered again. |
| In Europe, Gay-Lussac's hydrometer and tables are chiefly used for alcoholometric testing. |
