pH peak a peak b peak c peak d peak e peak f 0.4 4.5 4.2 4.05 2.86 2.55 2.25 1.1 4.5 4.2 4.05 2.86 2.55 2.25 2.0 4.5 4.2 4.05 2.86 2.55 2.25 3.01 4.5 4.15 4.0 2.86 2.53 2.24 4.03 4.5 3.95 3.8 2.86 2.47 2.15 5.03 4.5 3.92 3.76 2.86 2.46 2.12 6.08 4.5 3.91 3.76 2.85 2.46 2.12 7.08 4.5 3.90 3.75 2.85 2.45 2.10 8.02 4.5 3.90 3.75 2.81 2.44 2.05 9.03 4.45 3.90 3.45 2.65 2.42 2.00 10.04 4.4 3.90 3.4 2.58 2.36 1.95 11.28 4.4 3.90 3.39 2.57 2.35 1.94