Analysing and identifying substances - AQAFormulations
Formulations are complex mixtures of chemicals which have a specific use. Chromatography can be used to identify the substances present in a mixture of solutes.
A formulationA mixture that is always made with the same proportions of the same substances. is a mixture which has been designed as a useful product. Formulations are all around us, for example:
fuels
cleaning products
paints
medicines
alloys
fertilisers
foods
In a formulation, every chemical has been added in a carefully measured amount. Each chemical has a specific purpose in the formulation.