OPTi Digital Handheld Refractometer
Xylem The OPTi ® Digital Handheld Refractometer is a truly portable instrument that fits in the palm of your hand, and is capable of giving you over 10,000 readings on just 2xAAA batteries. It features a stainless steel prism dish which rapidly stabilises sample temperature, a durable IP65 rated body, and a clear LCD display.