Stability-based value of natural oils: Easy to determine with the Rancimat test

The value of a product and its quality are inherently linked. In the case of fats and oils, this may be difficult to determine by looks alone. Rancidity of such products, especially expensive natural oils from plant sources, is a factor which can immediately reduce the sale price. Oils which remain stable over longer periods of time are more highly valued as they lead to a higher quality end product, such as for foods or in cosmetics.