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

4-in-1 automotive fluid tester: Tests coolant (ethylene & propylene glycol), battery acid, washer fluid and AdBlue (DEF) – one tool for complete vehicle fluid checks. Wide measuring ranges for automotive fluids: Ethylene glycol: 0 to -50°C, Propylene glycol: 0 to -50°C, Washer fluid (ethanol & isopropyl): 0 to -40°C, AdBlue: 30%–35% urea, Battery acid: 1.10–1.40 kg/L – covers key vehicle fluid testing needs. Fast and accurate readings with ATC: Built-in automatic temperature compensation (ATC) ensures reliable results with only a few drops of liquid. Easy to use with clear scale: Apply 2–3 drops on the prism, close the cover plate and read instantly through the eyepiece. Designed for automotive use only: Not suitable for sugar, alcohol or food liquids, as this refractometer is calibrated specifically for vehicle fluids.