4-in-1 antifreeze refractometer ethylene glycol, propylene glycol, for automotive cooling fluid, Windshield washer fluid, AdBlue(DEF), automotive and industrial battery fluid measurement

About this item ? 4-in-1 — If you notice that the battery of your your cars, solar plant or heat pumps is not durable anymore, DO NOT hurry to change it. This antifreeze refractometer will help to measure the specific gravity of your battery acid, then provide a quick reference of battery fluid condition. Also the refractometer can be used to measure cleaning fluids freezing point, screenwash antifreeze point, ADBlue point. ? Easy to Use —Place 2 – 3 drops of sample onto the prism of the refractometer, then look through the eyepiece to get the reading directly. ? ATC Design —The refractometer adopt Automatic Temperature Compensation from 10℃ to 30℃ (50°F~86°F), reading directly, fast, accurate and light weight. ? MEASURING RANGE —Ethanediol (ethylene glycol): 0 to -50 ° C; Propanediol (propylene glycol): 0 to -50 ° C; windshield cleaning liquid – ethanol water: 0 ° C to -40 ° C, sopropyl alcohol water (SRF1): 0 ° C to -40 ° C. AdBlue: urea concentration 30% – 35%, Battery acid from 1.10 to 1.40 kg / L ? Packing List — 1 x refractometer; 1x calibration screwdriver; 1 x pipette; 1 x instruction manual; 1 x cleaning cloth, and a free hard case included which make the refractometer convenient to store and carry around.