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Abstract

James D. McCurry and Wesley Norman report on a new technology developed at Agilent Technologies. A small external, isothermal, capillary-column oven is used to isolate a polar wax column from a high-temperature column on a single gas chromatograph (GC). This allows five different biodiesel methods to reside on the same GC which would otherwise require two separate instruments. The isothermal biodiesel methods are used to test the external column oven performance and demonstrate the ability to combine these methods on a single GC. © 2009 Society of Chemical Industry and John Wiley & Sons, Ltd