Handheld Alcohol Refractometer 0‑80% Antifreeze Tester for Spirit Alcohol Volume Percent Measurement

1、Calibration Screw and Cover Plate: Drip distilled water on the prism, and turn the zero adjustment screw to adjust the dividing line to 0% of the scale. The cover plate is used to guard the prism and make the measurement more stable. 

2、Adjustable Eyepiece: When the scale is not clear, gently rotate the eyepiece for adjustment. The antifreeze refractometer is fast in detection, accurate in measurement and clear in display. 

3、Quick and Easier: Just 2 or 3 drops and wait for few seconds and get the accurate value. No battery required, less samples than a traditional hydrometer, more affordable than a digital meter. 

4、Main Function: It is designed for testing Spirit Alcohol Volume Percent, ideal for Brandy, Whisky, Vodka etc. Not recommend for wine or others which contains much sugar and other ingredients. 

5、Portable and Durable: This antifreeze tester is made of aluminum and plastic, which is durable and resistant to abrasion. Lightweight and convenient to carry and easy to use.