Car enthusiasts and DIY mechanics, this antifreeze refractometer is one of those tools you didn't know you needed until you have it! This clever 3-in-1 tester lets you check the freezing point of both ethylene glycol and propylene glycol based antifreeze, test battery acid specific gravity to check your battery's health, and even measure urea concentration in diesel exhaust fluid. The best part? No batteries needed - it works entirely on optical principles. Just place 2-3 drops of fluid on the prism, hold it up to light, and read the scale through the eyepiece. The automatic temperature compensation means you get accurate readings every time. I've used mine to maintain all our family vehicles and it's saved me from potential engine damage multiple times. The build quality is solid - it comes in a protective storage box with a pipette, screwdriver for calibration, cleaning cloth, and clear instructions. Calibration is simple with just water, and you rarely need to recalibrate once set. Whether you're preparing your car for winter, troubleshooting cooling system issues, or just doing routine maintenance, this refractometer gives you professional-grade diagnostics at an affordable price. It's compact enough to keep in your glove box or tool kit, and it's so much more accurate than those cheap test strips. If you work on cars regularly, this is definitely worth adding to your toolkit!
Free 30-day returns 
Free 30-day returns
