The meter is designed for measuring the concentration of sugar solutions and other non-sugar solutions. It is widely applied in measuring soybean milk concentration, sugar manufacturing, food and beverage. Besides, it is also suitable for measuring the solutions concentration of ketchup, jam, honey water and so on. From fruit planting to sale, it can help to determine the appropriate harvest period and contribute to classifying the sweetness degree. As for other functions, it can be used to control the concentration of various industrial solutions, such as cutting fluid, emulsion and detergent.