HHTEC 4 in 1 antifreeze refractometer ethylene glycol, propylene for automotive cooling fluid, Windshield washer AdBlue(DEF), and industrial battery fluid measurement

This Refractometer is mainly used to measure the ethylene glycol and propylene glycol concentration of the antifreeze using your cars, your solar plant, heat pumps, the freezer the pads of windscreen washer that determine heating system or other machines or systems MEASURING RANGE: Ethanediol (ethylene glycol): 0 to -50 ° C; Propanediol (propylene glycol): 0 to -50 ° C; windshield cleaning liquid - ethanol + water: 0 ° C to -40 ° C, sopropyl alcohol + water (SRF1): 0 ° C to -40 ° C. AdBlue: urea concentration 30% - 35%, Battery acid from 1.10 to 1.40 kg / L Easy to use; with instruction manual in English and 4 languages. Precision Measurement; Adapt the eyepiece group optical system: 4-8 times the amplification system, stepless manual focus. Can adapt to all eyes. In order to cover the myopia and hyperopia, you do not have to observe the measured data with glasses. Calibration: zero calibration with the distilled water at 20 °C, automatic temperature compensation between 10 °C and 30 °C (ATC).