Baumé Hydrometer

Glass Hydrometer with Baumé Scale

The Baumé hydrometer is an essential instrument for measuring the density or concentration of liquid solutions. Based on the principle of traditional hydrometers, it features a cylindrical shape similar to a thermometer, with a wider end acting as a floating base and the other end displaying the Baumé scale graduation (°Be).

The Baumé scale is calibrated with distilled water at 20 °C, meaning that a reading of distilled water at this temperature should indicate 0 °Be. Since liquid density varies with temperature, measurements must be taken at 20 °C or corrected using dedicated conversion tables when measured at other temperatures.

This type of hydrometer is widely used in industries such as alcoholic beverage production (beer, wine), honey and sugary product manufacturing, and in various chemical sectors. Its precision and ease of use make it a valuable tool for quality control processes.

The Baumé hydrometer enables the user to determine the concentration of a solution through direct readings on the scale, without the need for additional equipment. It is therefore suitable for both industrial and educational applications, particularly in teaching and studying physical and chemical principles such as density and concentration.

This measurement method is especially useful for quality control in the preparation of syrups, sugary beverages, saline solutions, or liquid pharmaceutical products. Choosing the appropriate range ensures a more accurate reading and facilitates work in industrial, educational or research environments.

Usage recommendations

• Ensure the hydrometer is clean and free from impurities before each measurement.
• Make sure the liquid is at 20 °C or apply the corresponding corrections if not.
• Insert the instrument gently into the sample, avoiding turbulence.
• Take the reading at the correct height of the liquid meniscus.
• Store the hydrometer safely when not in use.

To carry out these measurements correctly, it is essential to use suitable containers, such as cylinders, with the proper height and internal diameter for the measuring instrument (whether an alcoholmeter, hydrometer, mustimeter, or specialised liquid density meter). We offer a non-graduated glass cylinder specifically designed for such applications. With a capacity of 300 ml, an internal diameter of 40 mm and a total height of 300 mm, this cylinder provides optimal dimensions for precise laboratory measurements. It features a round base and smooth rim to ensure stability and ease of handling during use.