Chromatography systems are laboratory techniques used to separate mixtures into their individual components. They work by passing a mixture through a medium, where different substances move at different rates due to their varying interactions with the medium. This allows for the identification and analysis of each component in the mixture. There are several types of chromatography systems, including gas chromatography and liquid chromatography. Each type uses a specific method and medium to achieve separation. These systems are widely used in fields such as chemistry, biology, and environmental science for tasks like purifying compounds and analyzing complex samples.