A Proof and Tralle hydrometer directly measures the alcohol content of distilled alcohol or spirits with a specific gravity less than 1.000.
It is unlike standard beer and wine hydrometers because it is calibrated to give a direct reading of actual alcohol content and not the density of the liquid.
It is calibrated to give accurate readings at 20C and includes a chart that provides the adjustments needed when using it at different temperatures.
To use the hydrometer, simply fill a test tube with the liquid sample.
The plastic storage container that the hydrometer is supplied with can also be used as the testing container however a test tube with a wide base provides additional benefits.
1x Glass cylinder
|Material||3.3 Borosilicate glass|
|Proof Scale||0 – 200, (2 Point Resolution)|
|Tralle Scale||0 – 100% (1% Resolution)|
|Glass cylinder Total Height *Diameter||31*4.7cm （customization available）|
|Glass cylinder Bottom Diameter||7cm （customization available）|