Column: ReproSil-Pur C18-AQ, 120Å, 5µm, 150×4.6mm Sample: Native amino acids 1 = Alanine 2 = Valine 3 = Isoleucine 4 = Leucine Eluent: H2O Flow rate: 0.6ml/min Detection: RI Temp.: 40ºC