5-in-1 Coolant Tester Refractometer – Precision & Durability for Professional Use

Advanced Multi-Function Testing
Accurate measurement for ethylene/propylene glycol antifreeze, battery fluid, and washer fluid with a single tool. No separate devices needed for different fluids.
High-Precision Optical Lens
Premium Brix-scale optical lens ensures ±0.2% accuracy for reliable freezing/boiling point readings. Anodized aluminum body resists corrosion in harsh workshop conditions.
Automatic Temperature Compensation (ATC)
Built-in ATC adjusts readings for ambient temps (10°C–30°C), eliminating manual calibration errors. Ideal for mechanics, fleet maintenance, and industrial applications.
Ergonomic & Drip-Free Design
Non-slip rubber grip and sealed prism cap prevent spills. Lightweight (180g) for one-handed use in tight engine compartments or cold storage units.
Dual-Scale Easy Readout
Clear blue/white scale displays freezing points (°C/°F) and glycol concentration (%) simultaneously. Includes calibration screwdriver and carrying case for field service.
Best for:
Auto repair shops, HVAC technicians, marine engine maintenance, and winter vehicle prep. Bulk discounts available for fleet operators.