An affordable and accurate Brix refractometer to measure the sugar content of your fermentations, such as kombucha! A refractometer (sugar tester) is a tool used to measure the sugar concentration of a solution. The optical refractometer is ideal if you want to know the sugar content of a liquid, such as kombucha, kefir, or maple water. Place a few drops of liquid on this accurate and easy-to-use tool to instantly determine the density of the liquid. The digital refractometer works by measuring the refraction of light in a solution. The dual scale reads in Brix and SG (gravity). 1 Brix is equivalent to about 1% sugar. A Brix refractometer is easier and more accurate than a hydrometer for measuring sugar. However, a sugar tester is not mandatory in kombucha making. Learn how to measure sugar in your kombucha using a refractometer. Includes: Dual reading refractometer (0-32% Brix/Specific Gravity 1.000-1.120) with ATC (automatic temperature compensation) function for accurate readings Pipette Calibration screw Tissue for cleaning User's manual