Refractometer gives quick and accurate readings of colostrum by measuring 0-32% Brix with accuracy of 0.2%. High quality colostrum is a good indication of immunities available for absorption by a newborn calf. A Brix value of 22% or greater indicates colostrum quality is good. Unit features an Automatic Temperature Compensation (ATC) range of 50°F – 86°F without needing recalibration a great convenience when testing a large number of cows. Refractometer has an all-metal body polypropylene grip focusing eyepiece drop-tested daylight plate with hinge and is backed by a 30-day guarantee. The unit is packed in a nylon padded zipper pouch and includes a pipette a screwdriver and complete instructions for use and care. Wt. 13 oz.