Samples of light. medium and extra heavy Kurdistan crude oils and have been de-asphalted and separated into fractions of saturates by elution liquid chromatography technique. The fractions obtained were separated into n-paraffins. isoparaffins by urea adduction and analyzed using FTIR spectroscopy. https://www.roneverhart.com/AMS-Neve-1073SPX-Single-Preamp-and-EQ-p33827/