Digital Multi-Chek Celsius RefractometerMeets ASTM D3321-12 Standard test method for field test determination for the freezing point of aqueous engine coolants.Digital instrument for testing automotive fluidsOne accurate tester performs three critical tests. Test coolant, battery and windshield fluids.Why take chances? For precise reading of coolant concentration, hydrometers just don't measure up. The Reichert Digital Multi-Chek® accurately and effectively tests coolant - both ethylene and propylene glycol - as well as battery charge and windshield fluid. The instrument provides an accurate digital tool for your convenience, your customers' peace of mind, and increased profits for your shop.The Reichert Digital Multi-Chek® is economical to operate, providing 10,000+ measurements on two AAA batteries.Features:Coolant TesterCoolant tester tests engine coolant freeze point EG and PG concentration.Automatic temperature compensation (ATC) provides immediate, accurate, direct readings at ASTM D3321 standards of +/- 1°F and +/-0.55°C.Battery Fluid TesterFast and easy test of battery electrolyte, specific gravity, and condition.WindshieldPush button safety test for water fluid freeze point.Choose between two instruments:Measure in degrees FahrenheitMeasure in degrees CelsiusLeave the science to Reichert.With the simple push of a button, the Reichert Digital Multi-Chek®, the world's smallest handheld tester, will quickly and accurately provide you and your customer with ASTM standard readings for critical coolant, battery and windshield fluids.Improper concentrations (high and low) of glycol coolants/anti-freeze will result in inadequate freeze protection and general corrosion of materials in contact with glycol. Glycol is designed to work at its best efficiency when properly mixed at its correct concentration level. Under-concentrated glycol will result in frozen/burst pipes and engine blocks. With batteries, an improper electrolyte level will result in a dead battery cell. Improper concentrations of windshield wiper fluid could result in hazardous slushing and washer freeze-ups.The Reichert Digital Multi-Chek® the fast, accurate, state-of-the-art alternative to hydrometers and test strips.Just how inaccurate are hydrometers?According to ASTM method D1124. the BEST accuracy that is achievable with a laboratory-tested hydrometer in a controlled environment is 0±8° F. But, the field hydrometers commonly used in the service industry are not certified and have been tested and found to be inaccurate by as much as 0±23° F.Just how accurate is Multi-Chek?The Reichert Digital Multi-Chek® meets ASTM D3321 refractometer method standards for accuracy of ±1° F and ±0.55°C. Need we say more?!.