Chromatography
Introduction
Chromatography works by passing a sample (typically a solution) down a column which contains a porous solid material. The molecules in the solution tend to stick to the solid. The samples flow slowly in the same direction as the solvent in which they're dissolved. The speed that the sample flows depends on how strongly it sticks to the solid. This means that different types of molecules travel at distinct speeds because they stick to the solid with different strengths. When the molecules get to the end of the column they are detected in some way (such as spectroscopy) or collected for later analysis.
The different types of chromatography that are available at Kingston are:
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