HR series models possess various scales and additional functions which ensures the appropriate handheld refractometer for many application areas.

• Reliability when reading, as the measured value does not first have to be converted
• Selected models have an automatic temperature compensation which increases measurement precision for measurements which are performed at 10 to 40 °C instead of 20 °C
• For calibration, distilled water is required, or else a small calibration plate is provided

These refractometers are useful for the determination of mixing ratios, quality and quantity inspection in the beverages, food, sugar, chemicals, flavours, petrochemicals, cosmetics, metalworking, pharmaceuticals, water, education and research domains.