A refractometer instantly reads gravity, in Brix, of unfermented wort or fruit juice by measuring the degree that light passing through the sample is bent. Unlike a hydrometer, only a few drops are required for a sample. To use, apply 2-3 drops to the prism face, close cover, and look through the eyepiece while aiming your refractometer at a light source.

Our refractometers measure from 0-32° Brix, with an accuracy of +/- 0.2° Brix. They also include automatic temperature compensation for temperatures between 50-86° F, which eliminates the need to consult temperature correction charts. Check out our Refractometer Calculator, which will allow you to convert Brix to gravity before and during fermentation.