These units come in four range options, including salinity, brix, refractive index, and a combination of the these. For the units that feature automatic temperature compensation (ATC), these allow the user to concentrate on the measurements without worrying about the temperature. The compensation range is 50 to 86°F (10 to 30°C).
All models also feature a zero% adjust with distilled water. This allows for immediate and easy calibration for precise measurements at all times.