The triangle test has been long established in the food industry to pick the ´odd one out´ of three samples, as a means of measuring the impact of an ingredient or process change on the overall sensory character of a product.
Now a relatively new discrimination method, the Tetrad Test, is available at Campden BRI. The test objectives (testing for difference or similarity) are similar to the Triangle Test, but the test protocol is different: four samples are presented instead of three and assessors asked to form 2 groups of 2 samples based on similarity. This protocol provides the potential to increase the power levels of the test and potentially reduce assessor numbers. We have extensive practical experience with the Tetrad test, with a range of simple and multi-component products. We can help you make a smooth transition from Triangle to Tetrad for your discrimination testing requirements.
Contact: Natalie Jinks