what does brix measure
A brix refractometer is the instrument used to measure refractive index of an item's sucrose (Brix) level.Request Information. Although brix refractometers are best known for measuring liquids, they are also used to measure gases and solids.A Brix Refractometer is frequently used by grape growers, Kiwifruit growers, home brewers as well as food producers for Brix testing of sucrose levels in their fruit. brix refractometer is the instrument used to measure refractive index of an item's sucrose (Brix) level.