A hydrometer scale used in brewing beer, to evaluate the concentration of the wort. A reading in degrees Plato is equivalent to the percentage by weight of sucrose in a solution of sucrose in water having the same density as the wort. In other words, when the hydrometer reads 10°P, the solution has the same density as a 10% (by weight) solution of sucrose. Symbol, °P.
The Plato scale is named for Fritz Plato.
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Last revised: 2 March 2010.