Jack Cochran from Restek Corporation speaks at the 8th International Symposium on Recent Advances in POPs Analysis. Cochran touches on the importance of determining the gas chromatography column length because it allows EPC to deliver accurate Gas Chromatography carrier flow. With proper method translation, separations are maintained even after the substantial column trimming for maintenance. Performing method translation is just as important because it allows components to elute at the same GC temperatures, which maintains separations and avoids elution order changes. To save some money and keep uptime, GC columns separate longer than most users realize, even after column trimming.