- 4-in-1 Functionality: This versatile refractometer allows you to quickly and accurately check antifreeze levels in coolants and windscreen washer fluids. Additionally, it tests battery fluid acidity and AdBlue urea concentration, making it an essential tool for automotive maintenance. - Durable Construction: Designed for longevity, the refractometer features a robust chrome-plated brass housing and a soft rubber rotating handle. The measuring spindle is straw-shaped for easy use, and the precision optical system includes five sets of optical quartz lenses, ensuring over 94% light transmission for reliable readings. - Multiple Scales for Comprehensive Testing: The refractometer offers four measurement scales, covering: - Windscreen water, ethanol + water/propylene glycol + water: -40°C to 0°C - G11, G12, G13 cooling water (ethylene and propylene): -50°C to 0°C - Battery acid density: 1.10 to 1.4 kg/l - AdBlue urea concentration: 30% to 35% - Enhanced Accuracy with ATC: The device features automatic temperature compensation (ATC) for accurate readings between 10°C and 30°C. Zero calibration is simple with distilled water at 20°C, and the adjustable eyepiece provides 4-8x magnification with manual focusing, catering to all vision types. - Practical Applications: Ideal for automotive professionals and DIY enthusiasts, this refractometer is perfect for: - Regular vehicle maintenance, ensuring optimal coolant and battery performance. - Quick assessments before road trips or seasonal changes to prevent freezing. - Monitoring AdBlue levels for diesel vehicles to maintain emissions standards. This refractometer combines functionality, durability, and precision, making it a reliable choice for anyone involved in vehicle care.