The quality of incoming raw materials is essential in the manufacture of flavours and fragrances especially.
2 of the most vital tests are Density and Refractive index measurement. These are quick and precise physical measurements under temperature controlled conditions.
During the manufacturing process mixtures of components rapidly change the density and refractive index of the product.
The determination of these parameters quickly gives the ability to control the formulation of the product and finally check whether the product meets specification.