Please register for Exploration of the Low-Pressure GC (LPGC) Technique – New phases extending Restek´s LPGC line on Oct 25, 2024 3:00 PM CEST at:
Abstract : Throughput is one of the most important parameters in the lab while helium conservation becomes more important every day. While there are numerous ways to increase the speed of analysis, the low-pressure gas chromatography (LPGC) technique is a unique way of tackling faster run times while reducing helium usage. LPGC uses short, wide and medium bore columns rather than a short, narrow one with the power of the mass spectrometer to decrease analysis times. Coupling this type of analytical column with a narrow guard column that acts as a restrictor allows normal head pressure at the inlet, while the analytical column is operated under near-vacuum conditions. The low pressure inside the wide and medium bore column shifts the optimum linear velocity about a factor of 7 higher, which allows for faster analysis without a total loss of efficiency. Because of shorter run times and lower flow rates, LPGC can lead to an 80% reduction in helium usage compared to conventional GC-MS using a 30m column and make run times up to 4x faster.
Presenter : Mrs Jana Hepner, Restek Corp