<prompt> The following tests are used to check the efficiency of pasteurization of milk exceptPhosphatase testMethylene blue reduction testStandard plate countColiform count  <response>: Methylene Blue Reduction Test MBRT: Is an indirect method for detection of microorganisms in milk MBRT test is carried out on milk accepted for pasteurization Cold Pasteurization: The use of ionizing radiation or other means e.g. chemical to kill bacteria in food. Electronic pasteurization: Food irradiation 