The Extech RF20 is a handheld refractometer designed for quick and accurate measurement of the refractive index of liquids. This compact and portable instrument offers simplicity, reliability, and essential features, making it suitable for professionals in industries such as food and beverage, agriculture, and automotive.

The Extech RF20 utilizes the principle of light refraction to determine the refractive index of a liquid sample. It features a built-in measurement scale or digital display that allows users to read the refractive index directly. This measurement is useful for assessing the concentration or quality of solutions, such as sugar content in beverages, coolant concentration in automotive applications, and moisture content in agricultural products.

Operating the Extech RF20 is straightforward and user-friendly. Users simply place a small sample of the liquid onto the measurement prism or window, and the instrument measures the refractive index by analyzing the light passing through the sample.

The compact and lightweight design of the Extech RF20 ensures portability and convenience, allowing for on-the-go measurements in various locations. It is typically battery-powered, offering flexibility and ease of use in different testing environments.

The Extech RF20 is suitable for a wide range of applications, including food and beverage quality control, agricultural testing, coolant analysis, and research and development. It is particularly useful for professionals who require rapid and accurate refractometry for quality assessment, process control, and formulation purposes.