Hydrometers

Laboratory hydrometers are precision instruments used to measure the specific gravity or density of liquids. Typically made of glass, these instruments consist of a cylindrical stem and a weighted bulb that allows them to float in a liquid. The hydrometer works on the principle of buoyancy; when placed in a liquid, it sinks to a level corresponding to the liquid's density, indicated on the scale printed on the stem. Hydrometers are essential in various fields, including chemistry, biology, and environmental science, for tasks such as determining concentration levels in solutions, measuring alcohol content in beverages, or assessing the purity of liquids. They come in various types, including floatation hydrometers and digital hydrometers, providing versatility for specific applications. With accurate and reliable measurements, hydrometers play a crucial role in quality control and research.