ERMA 0-10% Brix Refractometer with ATC Low-Concentrated Sugar Solutions Accuracy 0.1% Synthetic Machining Coolants Maple Sap Cutting Liquid CNC Maple Syrup Makers Tea Manual Handheld Refractometer

A Refractometer is the instrument used to measure refractive index (RI). A refractometer measures the extent to which light is bent when it moves from air into a sample and is typically used to determine the refractive index of a liquid sample.