Refractometer Portable Dairy/equine ColostrumWhy do I need One? It is impossible to tell just by looking, how good the colostrums is. High quality colostrums is critical. In the past we have used a Colostrometer to measure quality. Recently a thing called a BRIX REFRACTOMETER has been found to be even better. A refractometer, uses light to measure the quality of the colostrums (and sugar content of grapes, grasses etc in other fields) Advantages of a Brix Refractometer over colostrometer Much