HR series handheld refractometers provide quick on-site measurements. They are especially easy to use and very sturdy. Various scales and additional functions ensure that there is exactly the right handheld refractometer for many application areas. This makes for reliability when reading, as the measured value does not first have to be converted. Some models have an automatic temperature compensation feature which increases measurement precision for measurements which are performed at 10–40 °C instead of 20 °C. For calibration, distilled water is required, or else a small calibration plate is provided. Fields of application: Determination of mixing ratios, quality and quantity inspection in the following industries: • Beverages • Food • Sugar / sweeteners • Chemicals • Flavours • Petrochemicals • Cosmetics / hygiene • Metalworking • Pharmaceuticals • Water / effluent • Education / research