UPLC is a rising chromatographic separation technique whose packing materials have smaller particle size lesser than 2.5μm which improves the speed, resolution and sensitivity of analysis. When many scientists experienced separation barriers with conventional HPLC, UPLC extended and expanded the utility of chromatography. The main advantage is a reduction of analysis time which also reduces solvent consumption. The analysis time, solvent consumption and analysis cost are very important factor in many analytical laboratories. The time spent for optimizing new methods can also be greatly reduced. This results in many analysis in a day and quick results which is of very importance to the industries and research laboratories. UPLC principle is same as that of HPLC that is based on Van Deemter equation but decrease in particle size has increased efficiency at increased flow rates.
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