9. Additional Information
69
DA-650/-645/-640
Plato
Plato % expresses the extract content of sweet wort or beer in sucrose
weight % as the same SG (20°C/20°C) sucrose solution. It is based on
“Plato’s Extract Table” (correction of measurements made by C. J. N. Baling)
compiled for German government by F. Plato in 1918. Later, further
corrections were made by adding precise adjustments and thermal
corrections. At preset, Plato is used in many analysis as the industry standard
international unit (except UK) for wort and beer. When used as unit, it is
abbreviated as %P or °P (degree Plato). Plato degree uses Baling’s corrected
17.5°C reference temperature with constant weight g at 17.5°C: Plato degree
= 260×(1-1/gravity)
Baume’s hydrometer
Heavy Baume’s degree
SG unit measured by Baume’s hydrometer by French scientist A. Baume
expressed as °Be.
Heavy Baume’s degree is for SG larger than 1.
Heavy Baume’s degree = ((1/SG (15/4°C))-1)×(-144.3)
Light Baume’s degree
SG unit measured by Baume’s hydrometer by French scientist A. Baume
expressed as °Be.
Light Baume’s degree is for SG smaller than 1.
Light Baume’s degree = ((1/SG (15/4°C))-1)×144.3+10
Japanese sake degree
It is the unit for SG of sake, used as the measure to tell dry or sweet sake.
It is measured by a buoy for sake sample at 15
°
C.
Distilled water at 4
°
C is referenced (0). Those lighter than reference are
determined as + (plus)/dry whilst heavier than reference are –
(minus)/sweet.
Japanese sale degree is defined by law as follows:
Japanese sake degree = ((1/SG (15/4°C))-1)×1443
From the above, below equation derives:
SG (15/4°C)
= 1443/(1443+sake degree)
Ethanol degree
Unit of volume percentage of ethanol and water
Table of Ethanol degree and density is available. Reference temperature is
15
°
C. This unit is used in quality control of alcohol in beverages.
Summary of Contents for DA-640
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