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Baumé gravity is a unit of measurement of specific gravity used in the chemical industry for aqueous caustic soda and aqueous acid. Two arbitrary scales are employed, one for liquids lighter than water and the other for liquids heavier than water. This scale is also used to describe the density of acid solutions (Table B-2).

Table B-2 Explanation of the baumé gravity scale.

For liquids heavier (More dense) than water	For liquids lighter (less dense) than water
0° Bé is the distance the hydrometer sinks in pure water. 15° Bé is distance the hydrometer sinks in a solution that is 15% w/w sodium chloride (salt, NaCl) To convert from °Bé to specific gravity at 60 F: specific gravity = 145/(145 - °Bé)	0o Bé is the distance the hydrometer sinks in a solution that is 10% w/w sodium chloride (salt, NaCl) 10° Bé is the distance the hydrometer sinks in o pure water. To convert from Bé to specific gravity at 60 F: specific gravity = 140/(130 + °Bé)

Before standardization using specific gravity at the time of World War II, the Baumé scale was generally used in industrial chemistry and pharmacology for the measurement of density of liquids. Currently, the Baumé scale is still used in various industries such as sugar beet processing and in the starch industry and the density of liquid product produced from these two sources could well be presented in degrees Baumé.