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== The Role of the CEGS == [[File:CEGS LL6 model.png|alt=A 3D model of a CEGS model LL6.|thumb|CEGS LL6 - A six-channel CEGS capable of handling extremely small samples.]] The CEGS is computer-controlled machine that automatically performs the middle part of the radiocarbon dating process--the bit between ''Wet Chemistry'' and ''Isotope Analysis'' in the synopsis above. These tasks traditionally were performed by a researcher using a separate specialized manual vacuum apparatus for each step. They fell collectively under a broader definition of ''Pretreatment'' that includes everything before ''Isotope Analysis''. Combining extraction, purification and graphitization into a single instrument eliminates sample transfers, which are a source of contamination. Automation significantly reduces sample loss due to human error, and ensures extremely consistent temperatures, pressures, and process step times. A important consequence of this is reduced scatter in the analytical data, which leads to better statistics, lower uncertainties, and more reliable dates.
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