Refractometer, Range 58 Percent to 92 Percent Brix, Automatic Temperature Compensation No, Accuracy +/-0.2 Percent, Resolution 0.2 Percent, Function Aqueous Solutions, Features Optical Glass Prism with Copper Alloy/Nickel-Chrome Coating, Length 165 mm, Width 40 mm, Height 40 mm, Includes Carrying Case, Instruction Manual, Transfer Pipet This product contains a chemical that is regulated under California Proposition 65. Warning: This product contains a chemical known to the State of California to cause cancer. -