If colostrum tests green with a colostrometer it is pasteurized with this 10-gallon batch pasteurizer. However, cow colostrum and heifer colostrum are kept separate. Since several employees work in the maternity and newborn calf-care areas at Galeton Dairy, Galeton, Colo., they attach a
colored clothespin onto the pasteurizer lid to signify if cow colostrum or heifer
colostrum is in the pasteurizer. That way, no matter which employee is in the milk-prep room when the batch is done, he or she  will know how to bottle and mark the colostrum. A red clothespin signifies heifer colostrum; a blue one means cow colostrum.