1. PRECISE MEASUREMENT Our refractometer is a precision optical instrument designed to measure the freezing point of antifreeze. Utilizing the principle of total reflection, it accurately determines the refractive index of the solution, enabling precise calibration of the test fluid's concentration and performance. 2. VERSATILE USES This refractometer can measure the freezing points of ethylene glycol and propylene glycolbased antifreeze agents, as well as the freezing point of automotive windshield washer fluid. Additionally, it can assess the specific liquid and condition of leadacid battery electrolytes. 3. TEMPERATURE COMPENSATION Equipped with automatic temperature compensation, our refractometers ensure accurate measurements within a temperature range of 10°C to 30°C. This feature guarantees reliable and consistent results under varying environmental conditions. 4. CLEAR SCALE ACCURACY The refractometer features a clear, easytoread scale for quick and accurate measurements. With its precision, the measurements provided by our refractometers are reliable.