Principle of Hydrometer/Brix Meter
The hydrometer has the same principle as the glucometer. It measures the specific gravity of a specific solution by the height it floats in the solution, but the units of the glucometer and the hydrometer are different.
The estimation formula of the unit: [(Specific gravity-1)*1000]/4=Brix
For example, the specific gravity of wort is 1.040. According to the conversion formula, the sugar content is about 10p. The relative density is measured, which is the density of the solution relative to water. The specific gravity of water is 1.000. The reading refers to the standard temperature (20 degrees Celsius). Density is temperature dependent, so hydrometer readings should be corrected to specific gravity at standard temperature.
