A triangle test is a sensory evaluation method used to determine if there are perceptible differences between two products. In this test, participants are presented with three samples: two that are identical and one that is different. They are asked to identify the odd sample out, helping researchers assess product variations in areas like food, beverages, or cosmetics. This method is commonly used in quality control and product development. By analyzing the results, companies can make informed decisions about product formulations, ensuring consistency and meeting consumer preferences. Triangle tests are a reliable way to gather objective feedback on sensory attributes.