The programmable refractometer is preloaded with the commonly used Brix (0–95%) and nD (refractive index) scales

In addition, users may create custom scales. An unlimited number of scales can be stored in the software’s database. Transfer these from a computer to the three numbered display positions on the Programmable Refractometer using the built-in USB computer interface. Scales can be loaded and unloaded from database to refractometer at any time. Test results can be saved to a computer, graphed, and analyzed. Reads samples as small as 0.4mL with the full scale accuracy of 0.1% using CCD scanner (linear scanned array imaging) technology. Measurement results, unit of measure, and sample temperature are all displayed on the large LCD. Visual alarms are indicated by a red LED. The programmable refractometer's sophisticated microprocessor provides automatic calibration, automatic temperature compensation, and automatic shutoff (after 3 minutes). The unit features one button calibration to distilled water and indicates when the battery should be replaced (5,000 readings). Scratch-resistant sapphire crystal lens.