Liquid Chromatography Mass Spectrometry (LC-MS) is currently the most powerful tool available for quantitative and qualitative analysis of samples with a wide range of complexity. Although liquid chromatography technology plays an essential part in LC-MS analysis, it has often been overshadowed by advances in mass spectrometer performance and usability. In this series, we will uncover the crucial role of nano-, capillary-, and micro-low LC separations in proteomics and biopharma LC-MS applications.