For sale: A (Testo Oil Tester) device, almost new, as it has been used only a few times. It is designed for measuring the quality and suitability of frying oil used in restaurants, hotels, homes, food carts, and any place that uses frying, and it covers all types of frying equipment. The German-made and quality oil testing device works through a measuring unit that determines the oil's suitability, in addition to a color screen that indicates the oil's suitability, with the color indicators as follows: Green = Suitable for use. Yellow = Intermediate. Red = Not suitable for use (change). The device gives you an accurate overview of your frying oil's quality as a percentage. The oil testing device comes with an overhead light that gives a clear warning when it's time to dispose of the used oil. It measures oil quality and determines its suitability, giving an indication if the oil is suitable for use or needs to be changed. The device is considered one of the most important requirements of the municipality, health authorities, and the Food and Drug Administration.