Check the listing for details. Digital brix Refractometer. Condition: New – Open box. Listed at 39.99 USD. The Digital Brix Refractometer by Nestool is a handheld refractometer designed for use in biological laboratories. This unit offers accurate readings for refractive indices, making it essential for various research and medical applications. Its compact size and user-friendly design make it easy to handle and transport, providing convenience and efficiency in the lab setting. Ideal for professionals in healthcare and industrial fields, this digital refractometer is a reliable tool for precise measurements in a range of disciplines.