Compact and easy to use, the handheld refractometers are ideal for laboratory or production environments measurements. Simply immerse the sensor in the sample or drop the sample on top of the sensor prism. These units are best used for calculating the Brix value of fruit juices, soft drinks, sauces, soups, water-soluble cutting oils, washing liquids, industrial liquids, and coolants. Many of these handheld refractometers are rated for water resistance that enhances durability and simplifies cleanup procedures.