Gas chromatography (GC) systems separate and analyze molecules by introduction into a continuous gas stream, followed by column separation and detection by flame ionization or another technique. The systems are widely used in analytical labs, biomedical research, materials science and a host of other fields. Important considerations include: the type and robustness of gas injectors, the configuration and ease with which to adjust pre-columns and separations columns, and the type and quality of detectors. The user interface and data analysis software are important aspects as well, with a range of advanced options available with newer systems.
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