Density bottles, Nairobi Industrial Area

A density bottle, also known as a specific gravity bottle or pycnometer, is a laboratory apparatus designed for measuring the density of liquids and solids. Typically made of glass, it features a narrow neck and a precisely defined volume, allowing for accurate determination of mass. The bottle is filled with the substance of interest, and its mass is recorded. The density can then be calculated by dividing the mass by the known volume of the bottle.

Density bottles are essential for various applications, including determining the specific gravity of liquids, performing quality control in industrial processes, and conducting research in chemistry and physics. Their design ensures precision and ease of use, making them valuable tools for scientists and researchers in both educational and professional settings.