4-in-1 DEF Antifreeze Coolant Refractometer for Automobile Antifreeze System, Diesel Exhaust Fluid, Battery Acid and Windshield Washer Fluid

Key features

• Function 1: Measuring freezing point of automobile antifreeze based on ethylene glycol or propylene glycol.Measuring Range: -50 to 0 ℃.
• Function 2: Measuring specific gravity of battery acid and provide a quick reference of battery charge condition.Measuring Range:1.10 to 1.40 kg/l
• Function 3: Measuring windshield washer fluid based on ethanol or isopropyl alcohol.Measuring Range:-40 to 0 ℃
• Function 4:Measuring Urea Concentration in automobile diesel exhaust fluid (DEF).Measuring Range:30% to 35%
• Features automatic temperature compensation: makes it even easier to get fast results.