California Proposition 65: This product contains a chemical known to the State of California to cause birth defects or other reproductive harm. Refractometer, Range -50 Degrees to 0 Degrees C Ethylene Glycol, -50 Degrees to 0 Degrees C Propylene Glycol, 1.10 to 1.40 Battery Acid, Automatic Temperature Compensation Yes, Accuracy +/- 0.01, Resolution 0.01, 1 Degrees C, 33.80 Degrees F 1 Degrees C, Function Measures the Concentration of An Aqueous Solution By Measuring Its Refractive Index, Specific Gravity 1.10 to 1.40, Freezing Point -58 Degrees to 0 Degrees F Ethylene Glycol, -58 Degrees to 0 Degrees F Propylene Glycol. This item has been restricted from sale in the following state (s): []