Certified 0-32% Sugar Refractometer with ATCPlace a drop or two of a sample on the prism and read the resultsIncludes:ScrewdriverCarrying CaseTransfer PipetteDistilled WaterInstruction ManualRegistration CardCertificate of calibrationSper Scientific portable refractometers work in ambient light with no battery or other power source necessary. A refractometer measures the extent to which light is bent (refracted) through a liquid sample. They are commonly used to help identify or confirm the identity of a sample, assess the purity of a sample, or determine the concentration of a solute in a solution.They can be used in labs, on production lines, in the field or anywhere. Simply place a drop or two of a sample on the prism and read the results immediately. With reasonable care, their reliability, precision, and optical performance will last forever. All Sper Scientific refractometers come complete with:Rubber coated hand grip and construction, which insulate the test solution from inaccuracies caused by the user's body heat.Covered eye piece and bright, clearly defined scale, with large easy-to-read measurements.All the accessories for immediate use, including calibration tools and solutions, full instructions, transfer pipettes and protective cases.This refractometer features Automatic Temperature Compensation (ATC), which makes manual temperature corrections unnecessary. The most popular refractometer range due to its usefulness in a wide variety of quality control applications for the sugar content of fruit, fruit juices, wine, milk, soft drinks and yeast cultures solutions. Also used for industrial cutting, lubricating, soluble tempering oils and emulsification solutions.