Antifreeze Refractometer for Measuring Freezing Point of Automobile Antifreeze Systems and Checking Battery Fluid Condition 3 in 1 Coolant Tester for Battery Acid Propylene and Ethylene Glycol Acid

This Antifreeze Refractometer can be used to measure the freezing point for the antifreeze fluid based on ethylene glycol or propylene glycol, you can use it for testing specific gravity of battery acid and provide a quick reference of battery charge condition . With high-quality optics and a smooth focus, made of aluminum alloy,it can replace the hydrometer for easier, more accurate measurement. The internal optical lens with a high refractive index forms a precision optical system. It is convenient for automotive owners to check your automotive coolant and protect your car engine. No battery needed. Product features ? Easy to carry, compact and lightweight, with sturdy storage box, no batteries required. just 2-3 drops of solution and a few seconds, you'll get accurate readings, and under the guidance of the user manual, you'll learn how to easily calibrate and use the refractometer. ? The Antifreeze Refractometer with 3 in 1 display, The scale range of this refractometer is Battery fluid based:1.100 to 1.400kg/l , ethylene glycol based: 32 to -84 degree F, propylene glycol based:32 to -60 degree .The scale range is suitable for most of the automobile antifreeze on the market. ? With ATC function,the refractometer is equipped with automatic temperature compensation part inside, which minimizes the effect of the temperature. How to Use ? calibration: just 2-3 drops of fresh water or distilled water.Turn the calibration set screw until the blue line is on zero. ? After calibration, ?clean the prism with soft cloth.use the dropper to take a sample of wort and put it on the prism. ? Align the prism assembly with the light source, look into the eyepiece and you can get the reading. Package Refractometer x 1 Plastic Pipette x 2 Mini Screw Driver x 1 User Manual x 1 Cleaning Cloth x 1 Plastic Box