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❄️ Stay Cool, Stay Ahead: The Ultimate 4-in-1 Fluid Tester for the Modern Driver
This 4-in-1 antifreeze refractometer offers precise measurement of freezing points for ethylene and propylene glycol-based antifreeze, urea concentration in diesel exhaust fluid (30-35%), specific gravity of battery acid (1.10-1.40 Kg/L), and freezing points of windshield washer fluids (-40 to 0°C). Featuring automatic temperature compensation, it delivers accurate, quick readings with minimal sample size. Built from durable aluminum and ABS materials, it’s portable and designed for long-lasting professional use.









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