antifreeze fluids refractometer: Tester for antifreeze fluids refractometer Automotive antifreeze tester FEATURES: The refractometer is designed according to the principle of different concentration of liquid which different refractive index.Specially designed to apply for cars/vehicles auto battery antifreeze fluids glycol test and analysis .Equipped with ATC (Automatic Temperature Compensation), can automatically adjust to correct temperature deviations while in use.Easy steps allowing for quick and accurate testing /analysis of glycol concentration of engine coolants or other antifreeze solutions.You can easily know the freezing point for propylene glycol and ethylene glycol, with the indication percentage.It is also used to check the resistance of electrolyte batteries. you solution.Adorned with soft and comfortable anti-slip rubber.Small size and lightness, it makes it portable, very practical.The best partner for motorists in winter. Measurement range: Propylene Glycol: -50 to 0CEthylene Glycol: -50 to 0CCleaning fluids: -40 to 0CBattery fluids: 1.10-1.40sgResolution Factor:Propylene Glycol: 5CEthylene Glycol: 5CCleaning Fluids: 5C Battery Fluids: 0.01sg Package Contents: 1 x Antifreeze Fluids Refractometer1 x mini screwdriver1 x pipetter1 x cleaning cloth1 x carrying case