Hydrometer

A hydrometer is a device used to measure the density or specific gravity of liquids, which helps determine their concentration or purity. It consists of a weighted float that sinks to a level indicating the liquid's density on a calibrated scale. When placed in a liquid, the hydrometer’s level of immersion reveals whether the liquid is more or less dense than water. Common uses include testing the alcohol content in beverages or the sugar concentration in solutions. It is a simple, reliable instrument essential in various industries for quality control and analysis.