The HARVEST Refractometer 0-32% Brix is a high-quality, manual instrument designed for measuring the sugar content in liquids, specifically for agriculture and food production. Suitable for farmers, horticulturists, and quality control professionals, this refractometer is engineered to provide reliable and precise Brix readings, ranging from 0% to 32%. Ideal for measuring sugar levels in fruit, vegetables, juices, and other liquids, this tool helps you determine optimal ripeness and crop quality with ease. Its lightweight, portable design makes it perfect for use in the field or laboratory settings. Refractometer with Automatic Temperature Control Measures Brix from 0 to 32.0% (Accuracy +/- 0.5%). Suitable for plant sap, fruit juice, wine, etc. Place a couple drops of sample on the glass, close flap and read the results in Brix through the shaded area on the eyepiece. Wipe clean with a soft cloth afterwards. Q1: What's the difference between other company Aluminum & Plastic refractometer and our company pure aluminum material? A: The pure aluminum refractometer is higher quality than aluminum+plastic. For example the 0-32% brix pure aluminum refractometer weighs about 128g. 0-32% brix plastic+aluminum refractometer weighs about 99g. Both the prism block and the lens barrel are aluminum,In cheaper makes, the aluminum+plastic prism block is aluminum but the lens barrel is plastic. Includes case and instructions.