Material and construction - Metal and plastic construction for durability. The main body is metal with a silica gel coating for grip and moisture resistance. Clear, precise readings - The scale is clearly visible through the imported objective lens, enabling accurate and repeatable measurements. Sensitivity and reliability - Copper coating enhances measurement sensitivity, supporting reliable readings in varied conditions. Function and compatibility - Refractometer designed to measure the refractive index of liquids. Suitable for sugar content testing, liquid quality checks, and general liquid characterization. Use scenarios - Food and beverage QC: quickly assess sugar content in juices, syrups, or beverages on site. - Industrial and laboratory testing: monitor concentration and purity of oils, chemicals, or other liquid samples. - Education and demonstrations: use in classroom or training settings to illustrate refractive index concepts.