Check the listing for details. Digital Glycerine Concentration Refractometer Meter Tester 100%. Condition: New. Listed at 145.00 USD. ▲Digital Glycerine Concentration Refractometer Meter Tester 0.0-100% One-second measurement, one-key correction, simple design, one-handed operation, large LCD screen, easy to read, protective cover to prevent dust from entering the prism Super power saving, 1 AAA1.5V No. 7 battery (not included), automatic shutdown without operation. Excellent dustproof and waterproof performance (IP65), can be completely washed with running water, and the revolutionary E.L.I (external light blocking) function ensures the accuracy of the instrument when measuring outdoors. Clear water to zero, easy to operate, with automatic temperature compensation function (ATC), to ensure accurate measurement Small and lightweight, the single machine weighs only 110g, the bottom of the instrument can be lanyard design, easy to carry, zero point calibration: calibrate with 20℃ distilled water in 20℃ ▲Digital Glycerine Concentration Refractometer Meter Tester Glycerometer 0.0-100% glycerol Refractive Index ▲Digital Glycerine Concentration refractometer Meter Tester Glycerometer 0.0-100% glycerol Refractive Index 1.3350―1.47730nD▲Glycerol ：0.0-100%▲Refractive Index： 1.3350―1.47730nD▲Resolution：0.1， 0.0001ND▲Accuracy：±0.2%，0.0003ND▲Power Supply 1.5 AAA battery (not include)