... 47 0initial %B, 41 9 42 0initial separation, 43 7 44 2irregular samples, 41 4 41 5, 42 8 43 0vs. isocratic elution, 40 4 40 5, 40 9 41 3, 43 7 44 0large molecules, 46 4 46 5late elution, 42 1, 44 1linear gradients ... practice),815problems, 44 0 44 2, 47 0; see alsoTroubleshootingsteep gradients, 860–861program, 40 9range, 40 7 40 8, 41 0, 44 4 44 5regular samples, 41 4reproducibility, 44 9 45 1resolution, 43 4retention factor k∗, ... practices), 40 7 40 8method development, 40 6, 43 4 46 3method development outline, 43 5 43 6mixer, 112NPC, 46 6 46 7optimization, 44 2 44 6with DryLab, 48 3 48 5peak capacity, 45 1 45 6peak tailing, 40 7, 44 0polypeptides...