The Beaume hydrometer is used to determine the strengths of liquids in bleacheries, etc. The readings are expressed in degrees which may be changed into specific gravities by this formula:

Sp. gr. = 146.3 / 146.3 - N-----------

N is the reading on Beaume scale.

Example. - Change 30° Beaume to specific gravity.

Sp. gr. = 146.3 / 146.3 - 30 = 146.3 / 116.3 = 1.258