Product DescriptionProduct DescriptionMaterial :metal plasticMeasuring range :0-80% . Minimum unit:1%Accuracy : 1%Reference temperature is 20C. Accessories:1*measuring device 1*pipette, 1*cleaning cloth, 1*screwdriverNotes : 1. 1.Accurate measurement is based on good calibration, please calibrate the refractometer before first use. 2. Please keep the refractometer dry and clean, so that the instrument is accurate and durable. Note: Not recommended for wine or other products with high sugar content and other ingredients. 1. Simple and quick alcohol measuring refractometer, used to check the alcohol volume percentage of cognac, whiskey, vodka, etc. Note: Not recommended for wine or other products with high sugar content and other ingredients. 2. Accurate ATC reading:The portable alcohol refractometer has automatic temperature compensation (ATC), so you don't need to worry about temperature changes affecting the accuracy of reading. Refractometers used to measure alcohol volume percentage take into account changes in ambient temperature and automatically compensate accordingly for accurate and repeatable readings. 3. Unlimited use. The range of the scale is 0-80%V/V (V/V-volume percentage of alcohol), graduation: 1%v/five. Fourth metallic plastic: The alcohol refractometer is made of non-staining, non-corrosive, non-reactive aluminum, which is easy to carry, scratch-resistant and durable. 5. Note: Not recommended for wine or any food with high sugar or other ingredients.