4-in-1 antifreeze refractometer for ethylene glycol and propylene glycol, for measuring the freezing point of coolant, windshield washer fluid, AdBlue and batteries.

Application: This refractometer allows you to determine the concentration of ethylene glycol and propylene glycol in antifreeze for cars, solar panels, heat pumps, windshield washer fluid, heating systems, or other machinery or plumbing systems. Measuring range: Ethanediol (ethylene glycol): 0 to -50°C; Propanediol (propylene glycol): 0 to -50°C; Window cleaner – ethanol + water: 0 to -40°C; Propylene glycol + water (SRF1): 0 to -40°C; AdBlue: 30% urea – 35% battery acid concentration from 1.10 to 1.40 kg/l. Easy to use; instructions in French and 4 other languages. Precise measurement: Eyepiece optical system: 4-8x magnification, continuous manual focus. Suitable for all eyes. To accurately measure myopia and hyperopia, do not view the measurement data while wearing glasses. Calibration: Zero-point calibration with distilled water at 20°C, automatic temperature compensation between 10°C and 30°C (ATC).