4-in-1 Automotive Refractometer Antifreeze Battery Fluid Urea Coolant Tester This 4-in-1 automotive refractometer is designed for measuring antifreeze, battery fluid, urea (AdBlue), and coolant concentration levels, providing accurate and reliable results for vehicle maintenance. It is equipped with automatic temperature compensation (ATC) to ensure consistent measurements under various environmental conditions. The compact and durable design makes it ideal for professional mechanics and DIY car enthusiasts. Features: Measures antifreeze, battery fluid, urea concentration, and coolant freezing point. High-accuracy readings with automatic temperature compensation (ATC) for reliability. Compact, lightweight, and portable design with easy-to-read scales. Suitable for diesel and gasoline vehicles, including cars, trucks, and heavy equipment. Durable construction with a non-slip handle and high-quality optical lens. Specifications: Measurement Range: Ethylene Glycol: -50C to 0C (0?70%) Propylene Glycol: -50C to 0C (0?70%) Urea: 30?35% Battery Fluid: 1.10?1.40 kg/L Glass Water: -40C to 0C Resolution: Antifreeze Freezing Point: 5C Battery Fluid: 0.01 kg/L Urea Concentration: 0.2% Material: Durable aluminum body with non-slip rubber grip. Size: 15.6 x 4 cm (6.14 x 1.57 in) Weight: 129 g Package Includes: 1 x Refractometer 1 x Pipette for Sampling 1 x Cleaning Cloth 1 x Screwdriver for Calibration 1 x Storage Case (optional) 1 x User Manual Application Areas: Automotive workshops for coolant and antifreeze testing. Checking battery fluid specific gravity for optimal performance. Measuring urea solution concentration for diesel exhaust systems (AdBlue). Ensuring effective antifreeze and coolant protection in extreme temperatures. Usage Tips: Place 2?3 drops of liquid on the prism, close the cover, and view the reading through the eyepiece. Clean the prism after each use to ensure measurement accuracy. Store in a dry place and avoid exposure to direct sunlight or high humidity. Note: The urea refractometer does not include a test solution. Avoid immersing the unit in water or other liquids. Contact customer support for additional calibration tools or accessories. (description exceeds maximum possible length)