Gas chromatography is a technique used to separate mixtures of gaseous chemical compounds based on differences in the compounds’ relative affinities for a solid (gas-solid chromatography ...

Exclusion chromatography can be used to separate molecules on the basis of size 1,2. The technique described here, which uses gel filtration to separate high-molecular-weight DNA from smaller ...

Chromatography is a technique used to separate soluble substances that have been mixed together. It’s normally used to separate coloured mixtures, like food colourings. We are going to use ...

Sometimes a scientist needs to figure out what is in a certain mixture of substances. One way they can do this is to use a process called chromatography. In the activity below, you can try ...

More on the prominence of petit verdot in a moment. The professional panel of judges for the Governor's Cup competition reviewed more than 490 entries, commenting on each wine’s appearance ...