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This document discusses basic measurements and calculations that can be made from gas chromatography (GC) test chromatograms to monitor column performance over time. It reviews measuring the unretained peak time to check carrier gas flow and calculating average carrier gas velocity. Maintaining records of these measurements at different temperatures allows detection of developing column issues. The document also discusses relating carrier gas pressure drop and flow rate to calculate velocity through packed
- Author
- abid aziz
- Language
- EN