Refractometer Handheld Grape Refractometer for Wine 0-25% Spirits Tester Alcoholo Meter Brix 0-40% Sugar Concentration Meter Dual-Scale Easy to Focus and Calibrate

1. Align the Cover Plate with light, adjust the Focus Adjustment until you see the scale clearly.2. Calibration: Accurate Measurement depends on careful calibration. Please make sure the ambient temperature is about 68 °F, distilled water can be used to calibrate.A. Open the Cover plate. place 2-3 drops of the distilled water on the prism, then close the cover plate and make sure the water spread aross the prism without any air bubbles or dry spots. wait for about 30 seconds to let the reading to stabilize. Look into eyepiece and turn the calibration screw with the screw driver until the reading is "0"3. Clean the prism with soft cloth, then place 2-3 drops of the liquid sample to be tested on the prism.then close the cover plate and make sure the water spread aross the prism without any air bubbles or dry spots. wait for about 30 seconds to let the reading to stabilize. Align the prism assembly with the light source. look into eyepiece and you can get the reading.4. Please leep the refractometer dry and clean in the box, which can make sure the reading accuracy and durable.Package include : 1 x Refractometer 1 x Pipette1 x Screw driver1 x Cleaning cloth

• Sugar content: 0-40% Brix
• Alcohol Concentration: 0-25% Alcohol
• With Built-in ATC (Automatic Temperature Compensation)
• Only can be used before fermented, can not test the wine which already be done
• Dual-scale design to measure the sugar content of the grape juice (0~40%) and the alcohol concentration of grape wine (0~25%)