high-performance liquid chromatography ultra high-performance liquid chromatography ultra fast liquid chromatography UFLC Column chromatography where the mobile phase is a liquid, the stationary phase consists of very small (< 2 µm) particles and the inlet pressure is relatively high. [CHMO] ultra high-performance liquid chromatography UHPLC ultra performance liquid chromatography UPLC rapid resolution liquid chromatography RRLC rapid separation liquid chromatography RSLC