Wondering if your frying oil needs changing? This MirOil PCM test kit measures the oil's total polar contaminated material for easy adjustment of oil quality levels. More specifically, it quantifies the breakdown of oil and non-oil substances, as to the aging of your deep frying oil. Thus, allowing you to monitor and make the right decisions at the right time.This product is evidently a lifesaver in optimizing the use of your frying oil in restaurant kitchens and other food service environments.