4-in-1 refractometer for glycol, ethylene, propylene, freezing point coolant, windshield washer fluid, AdBlue, and battery electrolyte

Use: With this refractometer, you can determine the concentration of ethylene glycol and propylene glycol in your car, solar installation, heat pumps, disc freezing point detector, heating system, or other machines or water installations. MEASURING RANGE: Ethanediol (ethylene glycol): 0 to -50°C; Propanediol (propylene glycol): 0 to -50°C; Windshield washer fluid - ethanol + water: 0°C to -40°C, propylene glycol + water (SRF1): 0°C to -40°C. AdBlue: urea concentration 30% - 35%. Battery acid: 1.10 to 1.40 kg/L. Easy to use; With manual in French and 4 languages. Precision measurement: Adapt the optical system of the eyepiece group: 4-8x magnification system, progressive manual focusing. Can be adapted to all eyes. To cover myopia and hyperopia, you do not need to view the measured data with glasses. Calibration: Zero calibration with distilled water at 20°C, automatic temperature compensation between 10°C and 30°C (ATC).