The JorVet colostrumeter measures IgG content in a simple cowside test. The graduated cylinder
is filled with a few ounces of Bovine colostrum. The colostrumeter is gently inserted and floats
to a level indicating the colostrum IgG content. A University of Florida study found only 20
percent of colostrum contained an adequate amount of IgG for good calf health. Plastic.