Usage: It is for measuring honey, milk condensation, vegetable oils, fruit sugar syrup, jams and molasses. Measurement Range: Brix: 58-90% Brix, Resolution: Brix: 0.2%, 10-32% Water with 0.2% Reading Easy to handle. Place 2, 3 drops of the sample on the main prism, close the plate and look through the viewing window to read the Brix value. If you do not have professional calibration equipment, please do not calibrate. Do not calibrate this refractometer with water. Precision measurement: one dividing line (blue/white), excellent readability (daylight) and recognizable, adjustable focus eyepiece Accessories: pipette, cleaning cloth, minischr aubenzieher and box. With Pipette, you can easily waterproof proof. We do not provide standard calibration equipment and fluids