The Baumé scale is a pair of hydrometer scales developed by French pharmacist Antoine Baumé in 1768 to measure density of various liquids. The unit of the Baumé scale has been notated variously as degrees Baumé, B°, Bé° and simply Baumé (the accent is not always present). One scale measures the density of liquids heavier than water and the other, liquids lighter than water.
The Baumé of distilled water is 0.

Values ° Baume beings can be interpreted as follows:

• liquid of lower density than 1.000: ° Baumé > 24
• liquid density greater than 1,000: ° Baume > 12

As an example, a recent handbook indicates the following conversion rules at a temperature of 60°F:

• For liquids more dense than water. s.g. = 145 / {145 - degrees Baumé}
• For liquids less dense than water. s.g.= 140 / {130 + degrees Baumé}

Note: no more accepted in business transactions.

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