Different species of milk (example cow, goat, ewe's) have different milk composition.
The required optimum incubation time (Control Time) for sheep and goat milk takes about 10-30 min more than for cow milk.
For this reason it is important to test species-by-species with the corresponding Milk Controls for testing.
The control time (CT) is the incubation time for the test to become yellow with antibiotic free milk (color card between --- and -). At control time the sensitivity of the test is optimal.
