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| style="height:20px; width:600px; text-align:center;" |The mixture on the right shows the presence of [[lipid]]s.
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=====The Sudan III Test Method=====
: 1. Mix a small amount of the food sample with water in a test tube.
: 2. Add a few drops of Sudan III dye to the test tube and mix.
: 3. If lipids are present, a red-stained oil layer will form on the surface of the water.
: 4. If no red-stained oil layer forms, the food sample likely does not contain fats.