OPTi digital handheld refractometers are highly reliable, premium quality instruments used to test grass sugars, colostrum and antifreeze.
With up to 3 scales readily available at the touch of a button, the OPTi is the most versatile and feature-rich refractometer on the market.
A selection of scales for veterinarians and farmers for testing colostrum, blood and urine samples taken from animals. Thanks to needing only a small drop of sample to give a clear and accurate reading, OPTi refractometers are perfect for measuring samples that are often difficult to obtain or, in the case of colostrum, being a valuable commodity. Scales include Brix, RI, Colostrum Quality, Urine Specific Gravity, Serum Protein, and more.