- Automatic temperature compensation provides accurate readings at any temperature
- Large, easy-to-read scales and depth of field
- Portable – no batteries or power cord required
- Rugged, chemical-resistant housing
Coolant/battery acid refractometers offer an accurate, fast, and easy-to-use method for testing engine coolant freeze point, glycol concentration, and battery condition. Housing is shock-resistant, water-resistant, and dustproof. Determine the percent concentration from the freezing point reading and the included chart. Include a dipstick and flexible sampling pump built into the housing. Housing has an IP67 waterproof rating.