The SmartRef digital refractometer measures the refractive index and temperature of liquids and determines measurement parameters such as °Brix, °KMW and over 40 other measurement units. The refractometer is a portable, pocket-sized smart device suitable for a wide range of applications. Combined with the free mobile app, it offers more than 15 different measurement units. Measure the salinity of your saltwater aquarium or pool, the extract content of your beer, the sugar content in wine, the sweetness of fruits and vegetables, the moisture content of honey and much more.