This refractometer is for measuring the quality of mares colostrum.
Simply use the dropper to take a sample of colostrum post foaling and put it on the prism. Then hold the refractometer up to the light and look through the eyepiece.
Measures Brix: 0-32% and Specific Gravity:1.000-1.120
Includes:One Refractometer, carry case, screw driver, sample dropper and cloth cover, scale chart.
>30 Very Good