Density Bottle

Glass density bottles, also known as pycnometers, are precision laboratory instruments used to measure the density or specific gravity of liquids. These bottles are made of borosilicate glass for chemical resistance and thermal stability. They come with a ground glass stopper fitted with a capillary tube. This allows excess liquid to escape for precise volume measurement. The bottles are used by filling them with a liquid, weighing the filled bottle, and then comparing it to the weight of the empty bottle. They are essential in chemistry, material science, and quality control laboratories for accurate density determination.