Check the listing for details. Portable Refractometer Whiteness Meter Refractive Index Measuring Instrument. Condition: New. Listed at 220.00 USD. Portable Refractometer Whiteness Meter Refractive Index Measuring Instrument Note:Batteries not included in shipping！！！ Application Scenarios: A digital display high precision optical instrument designed using the principle of refraction. Small and beautiful, easy to use, can be easily put into the pocket. LCD large screen liquid crystal digital display, as long as a drop of sample solution placed on the prism, will be displayed within 3 seconds, can avoid human subjective errors in the numerical value of the interpretation. Suitable for measurement of juices, food and beverages, and other liquids.With automatic temperature compensation function, the use of more than 10,000 times, with automatic shutdown power saving function, temperature display: Celsius / Fahrenheit conversion, with power alarm function. Main Features: Temperature measurement range:0 – 40℃（32 – 104℉）；Precision of measurement temperature:±0.5℃（1℉）；Dimension: 135×65×40mm;Net weight: 200g;Power supply: 2×AAA(1.5V);Wide choice: over 20 models available;Automatic temperature compensation;Automatic power management. Technical Specifications： Technical DataScaleRangeMin. readingAccuracyBrix(%)0 – 45%0.1±0.2Refractive index1.3330 – 1.40980.0001±0.0003