Product Products Are Equipped With Optics. And Smooth Focus. The Main Body Is Made Of Aluminum Alloy. The Internal Optical Lens At High Refractive Index Constitutes The Precision Optical System. The Instrument Is Resistant To Abrasion And Corrosion, Can Be Used To Measure Salinity Of A General Corrosive Liquid. (But We Do Not Recommend Measuring These Liquids For A Long Time. The Residue Should Be Cleaned Up Immediately After Measurement.)Volume Refractometer Alcohol 0-80 V/VIt Is Designed To Test The Alcohol Volume Percentage Of Spirits, Ideal For y, Whiskey, Vodka, Etc.It Is A Portable Optical Instrument For Bartender, Liquor Retailer And Food Production Etc. 80 percent V/V (V/V - Alcohol Percentage By Volume), Division: 1 percent V/V.Features Automatic Temperature Compensation: Makes It Even Easier To Get Results Fast.Instant Reading Result : Just Need 2 and Agrave 3 Drops Of Solution And A Few Seconds You Can Get Accurate Readings.-Intended Use It Is Designed For Testing Alcohol Volume Percentage Spirits, Ideal For y, Whiskey, Vodka, Etc. (Not Recommended For Wine Or Others Containing A Lot Of Sugar And Other Ingredients.)Product FeaturesAtc Function The Built-In Automatic Temperature Compensation Function Temperature Helps To Get A Consistently Accurate Reading, No Need To Deliberately Control The Temperature Of Liquids, Just Make Sure It'S Up To Temperature. Room Temperature (Between 0 And 25).Safe And Durable This Refractometer Is Constructed With Non-Staining, Non-Corrosive And Non-Reactive Chrome Material Which Guarantees The Health And Safety Of All Users.Easy andAgrave To Use Simply Take A Few Drops Of Your Liquids Onto The Prism And Hold The Refractometer Up To The Eye. The Light, Then To Look At It. Through The Eyepiece You Can Get The Reading. No Need For Matching Table And No Waste!Package Includes: 1.A Refractometer and 2.A Closed Box and 3.A Cleaning Cloth and 4.A Screwdriver and 5 .A User Manual and 6.Some Pipettes -